Commonwealth v. Lopez ( 2020 )


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    SJC-12007
    COMMONWEALTH   vs.   ETNID LOPEZ.
    Bristol.       January 10, 2020. - August 20, 2020.
    Present:    Gants, C.J., Gaziano, Budd, Cypher, & Kafker, JJ.
    Homicide. Joint Enterprise. Evidence, Joint venturer,
    Authentication, Admissions and confessions, Voluntariness
    of statement. Due Process of Law, Police custody.
    Constitutional Law, Admissions and confessions, Waiver of
    constitutional rights by juvenile, Voluntariness of
    statement. Practice, Criminal, Admissions and confessions,
    Voluntariness of statement, Instructions to jury,
    Assistance of counsel, Postconviction relief, Capital case.
    Indictment found and returned in the Superior Court
    Department on October 1, 2010.
    A pretrial motion to suppress evidence was heard by D.
    Lloyd Macdonald, J.; the case was tried before Robert J. Kane,
    J.; and motions for a new trial and for postconviction
    discovery, filed on June 30, 2017, were considered by Thomas F.
    McGuire, Jr., J.
    Elizabeth Doherty for the defendant.
    Tara L. Johnston, Assistant District Attorney, for the
    Commonwealth.
    2
    BUDD, J.     The defendant, Etnid Lopez, was convicted of
    murder in the first degree on a theory of extreme atrocity or
    cruelty in connection with the stabbing death of Tigan
    Hollingsworth.   We have consolidated the defendant's direct
    appeal with his appeals from the denial of his motions for a new
    trial and for postconviction discovery, and we now affirm.
    After a full consideration of the entire record, we further
    decline to grant extraordinary relief pursuant to G. L. c. 278,
    § 33E.
    Background.     We present the facts in the light most
    favorable to the Commonwealth, reserving certain details for
    discussion of specific issues.
    At approximately 11:30 P.M. on June 25, 2010, the
    defendant, his girlfriend Kayla Lawrence, Jared Brown-Garnham
    (Garnham), and Michelle Torrey drove to a convenience store in
    Taunton.   The defendant wore a white T-shirt, and Garnham wore
    dark clothing with a blue bandana.    Upon arrival, the defendant
    entered the convenience store and Lawrence stood in the parking
    lot with Garnham.    While waiting for the defendant, Lawrence saw
    the victim and exchanged heated words with him.    Lawrence was
    familiar with the victim and had witnessed him, along with a
    group of other people, "jump" the defendant's brother, Jean
    3
    Carlos Lopez (Jean),1 a few years earlier.        Soon thereafter, the
    defendant came out of the store and, with a knife in his hand,
    began chasing the victim around the parking lot.         Torrey got out
    of her vehicle and attempted to restrain the defendant, holding
    him back by his arms, but the defendant eventually broke free
    and continued to chase the victim.         During this time, Jean and
    the defendant's uncle, Erving Cruz, drove into the parking lot.
    As Cruz got out of the vehicle, he pointed at the victim and
    shouted, "Is that him?      Is that him?    Get him."   Cruz and Jean
    joined the defendant in chasing the victim around the parking
    lot.       The victim then ran out of the parking lot and down the
    street.
    Two witnesses, Brittany Machado and Matthew D'Alessandro,
    observed the events at the convenience store parking lot as they
    waited in their vehicle at a red light directly across the
    intersection.       Both witnessed the victim flee down the street
    chased by two men:       one in a white T-shirt, and the other, who
    had just got out of a vehicle in the parking lot, in a black
    tank top and baggy black clothes.       Both witnesses observed the
    chase as they drove parallel to the three men.          As they made a
    left turn into their driveway, the victim and his two pursuers
    almost hit their car.       D'Alessandro witnessed the three males
    We refer to Jean Carlos Lopez by his first name because he
    1
    shares a last name with the defendant.
    4
    turn back toward the convenience store before turning down a
    driveway one house down the street.
    As Machado parked the car, they both heard the sound of the
    chain-link fence to their left clanging.     D'Alessandro then saw
    the victim in his neighbor's back yard, illuminated by a motion-
    activated spotlight, followed by the man in the white T-shirt
    and the man in the black tank top.    The two men then attacked
    the victim, holding him and hitting him.     As the victim fell to
    the ground, D'Alessandro heard the man in the black tank top
    ask, "Did you get him?   Did you get him?"    The man in the white
    T-shirt responded, "Yes I got him."    The two men then jumped
    over the fence and fled.2
    The victim suffered from thirteen stab wounds, several of
    which penetrated his chest cavity.    His cause of death was
    collapsed lungs and massive blood loss.
    The defendant's theory at trial was that Garnham was the
    killer.   He relied primarily on Lawrence's testimony that
    Garnham had participated in the attack and left the back yard "a
    few seconds" after the defendant.     Lawrence further testified
    that following the stabbing, Garnham threatened to kill Lawrence
    2 In separate trials, Erving Cruz was convicted of murder in
    the second degree in connection with the stabbing death.
    Commonwealth v. Cruz, 
    97 Mass. App. Ct. 1102
    (2020). Jean was
    convicted of murder in the first degree; however, his conviction
    subsequently was overturned on appeal. Commonwealth v. Lopez,
    
    484 Mass. 211
    (2020).
    5
    and her daughter, just as he had killed the victim, if Lawrence
    mentioned his name to police.    The defendant also called
    Garnham's brother, and the brother's fiancée, both of whom
    testified that Garnham admitted being involved in the attack.
    Discussion.    The defendant argues that the statements he
    made to police, text messages sent after the stabbing, and
    statements attributed to Cruz improperly were admitted in
    evidence.     He also contends that the trial judge erred in
    declining to instruct the jury on involuntary manslaughter.
    Finally, he argues that his motion for a new trial was denied
    improperly.
    1.   Coventurer statements.    At trial, over the defendant's
    objection, D'Alessandro testified that, as the defendant and
    Cruz3 pursued the victim around the convenience store parking
    lot, Cruz shouted, "Is that him?    Is that him?   Get him."   Soon
    thereafter, from his driveway, D'Alessandro observed the
    defendant and Cruz in the back yard of the house next door
    repeatedly striking the victim.     D'Alessandro testified that, as
    the victim fell to the ground, he heard the individual later
    identified as Cruz ask, "Did you get him?     Did you get him?" and
    3 Matthew D'Alessandro did not identify the defendant or
    Cruz; rather, he described observing and hearing a man wearing a
    white T-shirt and a man wearing a black tank top. Kayla
    Lawrence identified these individuals as the defendant and Cruz,
    respectively.
    6
    heard the other individual, later identified as the defendant
    respond, "Yes I got him."    D'Alessandro then saw the two
    attackers climb the chain-link fence and flee the scene.     The
    defendant contends that the judge erred in admitting Cruz's
    statements under the hearsay exemption for statements made by a
    coventurer.4   We perceive no error.
    It is well established that "[o]ut-of-court statements by
    joint venturers are admissible against the others if the
    statements are made during the pendency of the criminal
    enterprise and in furtherance of it."    Commonwealth v. Winquist,
    
    474 Mass. 517
    , 520-521 (2016), quoting Commonwealth v. Burton,
    
    450 Mass. 55
    , 63 (2007).    See Mass. G. Evid. § 801(d)(2)(E)
    (2020).   Before admitting a coventurer's statement, a judge must
    make a preliminary determination that the Commonwealth has
    established by a preponderance of the evidence, other than the
    out-of-court statement itself, that a joint venture existed
    4 The defendant does not challenge the admission of Cruz's
    statements on the ground that they were testimonial statements
    the admission of which violated the defendant's right to
    confront witnesses against him. See generally Crawford v.
    Washington, 
    541 U.S. 36
    , 59 (2004). Even if he had made this
    argument, we have recognized that, "[g]enerally speaking, the
    statements of joint venturers are the type of remarks that are
    deemed nontestimonial under Crawford." Commonwealth v.
    Winquist, 
    474 Mass. 517
    , 521 n.6 (2016), and cases cited. See
    Commonwealth v. Wardsworth, 
    482 Mass. 454
    , 464 (2019)
    ("Testimonial statements are those made with the primary purpose
    of 'creating an out-of-court substitute for trial testimony'"
    [citation omitted]).
    7
    between the declarant and the defendant, and that the statement
    was made in furtherance of that venture.    See Commonwealth v.
    Rakes, 
    478 Mass. 22
    , 37 (2017); Winquist, supra at 521.      If the
    judge finds that the Commonwealth has met this preliminary
    burden, the statement may be admitted, but the judge must
    instruct the jury that they may only consider the statement as
    evidence of guilt if the jury make "their own independent
    determination, again based on a preponderance of the evidence
    other than the statement itself, that a joint venture existed
    and that the statement was made in furtherance thereof."      
    Rakes, supra
    .   On appeal, we review the judge's preliminary
    determination that a coventurer statement is admissible for an
    abuse of discretion.
    Id. In doing so,
    "we view the evidence
    presented to support the existence of a joint venture in the
    light most favorable to the Commonwealth, recognizing also that
    the venture may be proved by circumstantial evidence."
    Commonwealth v. Bright, 
    463 Mass. 421
    , 435 (2012).
    Here, the judge made the requisite preliminary findings at
    sidebar before admitting each statement.5   The judge also
    5 The judge made preliminary findings based on the evidence
    already admitted before the Commonwealth sought to elicit the
    challenged testimony. Alternatively, "[o]ut-of-court statements
    may generally be admitted provisionally, subject to a motion to
    strike should the evidence presented through the course of the
    Commonwealth's case fail to establish the existence of a joint
    venture." Commonwealth v. Bright, 
    463 Mass. 421
    , 426 n.9
    (2012).
    8
    provided appropriate instructions to the jury regarding how to
    consider the statements both prior to their admission in
    evidence and in his final charge.6   The judge did not abuse his
    discretion in determining that the Commonwealth had established,
    by a preponderance of the other evidence presented, that Cruz's
    statements were made during the pendency of a joint venture with
    the defendant and in furtherance of that joint venture.
    "A joint venture is established by proof that two or more
    individuals 'knowingly participated in the commission of the
    crime charged . . . with the intent required for that offense.'"
    
    Winquist, 474 Mass. at 521
    , quoting 
    Bright, 463 Mass. at 435
    .
    There was ample evidence, independent of Cruz's statements, that
    the defendant and Cruz were engaged in a joint venture that led
    to the victim's death.   D'Alessandro, Machado, and Lawrence all
    testified that the defendant was chasing the victim around the
    convenience store parking lot and shouting expletives at the
    victim when Cruz arrived, got out of the car, pointed at the
    victim, and immediately joined the chase.   The same witnesses
    also testified that the defendant and Cruz pursued the victim
    down the street and into a back yard several houses away from
    6 Cruz's statements also could have been admitted as
    nonhearsay for some purpose other than the truth of the matter
    asserted; however, the judge here did not instruct the jury to
    consider Cruz's statements for some nontruth purpose. See
    
    Wardsworth, 482 Mass. at 463
    .
    9
    the convenience store.    D'Alessandro, Lawrence, and another
    witness testified that both the defendant and Cruz struck the
    victim multiple times in the back yard, and then fled shortly
    after the victim fell to the ground.       This testimony
    establishes, by a preponderance of the evidence, that the
    defendant and Cruz "were involved in a joint venture that
    resulted in the victim['s] death."     
    Rakes, 478 Mass. at 38
    .
    In addition, each of Cruz's statements was made during, and
    in furtherance of, the joint venture.       At the time of Cruz's
    first statement, he was just beginning to join the defendant in
    pursuing the victim.     The primary ends of the joint venture --
    that is, catching and attacking the victim -- had not yet been
    achieved.   In pointing at the victim and saying, "Is that him?
    . . . Get him," Cruz furthered the venture by seeking to confirm
    the target, as evidenced further by Cruz immediately joining the
    chase.
    As for Cruz's second statement in the back yard, the
    defendant contends that it was inadmissible as a statement in
    furtherance of the joint venture because the attack had been
    completed by that time.     We disagree.    "In essence, the inquiry
    to determine whether a statement was made during the pendency of
    a criminal enterprise and in furtherance of it 'focuses not on
    whether the crime has been completed, but on whether a joint
    venture was continuing.'"     
    Winquist, 474 Mass. at 522-523
    ,
    10
    quoting Commonwealth v. Stewart, 
    454 Mass. 527
    , 537 (2009).
    Cruz's statements were made mere moments after the stabbing; he
    sought to confirm whether the defendant had "gotten" the victim,
    and when the defendant confirmed that he had,7 the two fled the
    scene together.    See 
    Bright, 463 Mass. at 436-437
    ("Efforts on
    the part of a joint venturer to . . . effect an escape warrant
    the inference that the joint venture continued . . .");
    Commonwealth v. Freeman, 
    430 Mass. 111
    , 117 (1999) ("the
    statements were made when the cooperative effort was in
    progress, after the coventurers retreated immediately following
    the crime").    The defendant's and Cruz's interests remained
    aligned when Cruz made the challenged statements.    See 
    Rakes, 478 Mass. at 41
    (continued "commonality of interests" indicates
    ongoing venture [citation omitted]).    Cruz's statements were
    admitted properly.
    2.    Text messages.   After a voir dire of Lawrence, the
    judge allowed the Commonwealth to present evidence of three
    incriminating text messages that originated from Lawrence's
    cellular telephone (cell phone) that purportedly were authored
    by the defendant and sent to Garnham one day after the stabbing.8
    7 The defendant's own statement was not hearsay; it was
    admissible as a statement of a party opponent. See 
    Bright, 463 Mass. at 435
    ; Mass. G. Evid. § 801(d)(2)(A) (2020).
    8   The three text messages are as follows:
    11
    The defendant argues that the admission of these messages was
    error because they were not properly authenticated.     We
    disagree.
    Before a communication may be admitted in evidence, the
    judge must make a determination regarding its authenticity; that
    is, the judge must determine whether there exists sufficient
    evidence that, if believed, a reasonable jury could find by a
    preponderance of the evidence that the communication in question
    is what it is purported to be.   Commonwealth v. Purdy, 
    459 Mass. 442
    , 447 (2011).   See Mass. G. Evid. § 901(a).    Authentication
    may be accomplished by way of direct or circumstantial evidence,
    "including its '[a]ppearance, contents, substance, internal
    patterns, or other distinctive characteristics.'"     Purdy, supra
    at 448, quoting Mass. G. Evid. § 901(b)(1), (4).
    Here, evidence of the contents of the messages, including
    identifying information and other corroborating evidence,
    together with evidence of the originating device, was sufficient
    to authenticate the communications as having been authored by
    11:19 A.M.: "ayo itz ez da story is we saw dude we chased
    hym he got away n 1 hour later we got a call sayin he died
    iight i dont want every1 gettin in troble 4 my shyt"
    11:26 A.M.: "iight lil 1 is goin first to c wut happenz
    wyth her n shyt"
    11:32 A.M.: "wurt i just told yu we try chasin hym n he
    got way then lyke an hour later they called sayin he got
    stabbed."
    12
    the defendant.   The first text message begins, "ayo itz ez."
    Based on Lawrence's testimony during the voir dire, and the
    defendant's statement to police, "EZ" was the defendant's
    nickname.   In addition, the second message refers to "lil 1,"
    which Lawrence indicated was the defendant's nickname for her.
    See Commonwealth v. Johnson, 
    470 Mass. 300
    , 317 (2014).
    Although evidence of identifying information within a
    communication is not sufficient by itself to authenticate the
    communication, see 
    Purdy, 459 Mass. at 450
    , there were other
    confirmatory circumstances that pointed to the defendant as the
    author, see Commonwealth v. Webster, 
    480 Mass. 161
    , 170 (2018).
    For example, one of the text messages suggested to Garnham that
    the "story" they could present was "we saw dude we chased hym he
    got away n 1 hour later we got a call sayin he died."
    Consistent with this message, the defendant told police that,
    although he chased the victim around the parking lot, the victim
    got away.   The text messages and the defendant's admissible
    statements to police sufficiently mirror one another to serve as
    a confirming circumstance that the defendant authored the
    messages.   See 
    Johnson, 470 Mass. at 317-318
    .
    Finally, the text messages originated from Lawrence's cell
    phone.   Lawrence and the defendant lived together, and Lawrence
    testified that the defendant had access to her cell phone when
    the text messages were sent.   See 
    Johnson, 470 Mass. at 317
                                                                        13
    (electronic mail sent from account shared by married defendants
    authenticated due to use of typical signature and other
    confirming circumstances).
    Taken together, the confirming circumstances surrounding
    the text messages presented by the Commonwealth provided
    sufficient evidence for a reasonable jury to find by a
    preponderance of the evidence that the text messages were
    authored by the defendant.    Thus, the judge did not err in
    finding that the messages were admissible.
    3.   Statements to investigators.     At trial the Commonwealth
    presented a redacted version of the videotaped interrogation of
    the defendant.   The defendant contends that his statements were
    improperly admitted because his Miranda waiver was involuntary,
    as were the statements he made thereafter.9
    a.   Miranda.   i.   Custody.   "The requirements of Miranda
    . . . are not triggered unless the interrogation is custodial,
    and a defendant's failure to receive or understand Miranda
    warnings, or police failure to honor Miranda rights, does not
    result in suppression of a voluntary statement made in a
    noncustodial setting."     Commonwealth v. Hilton, 
    443 Mass. 597
    ,
    9 During the interview the defendant claimed that, although
    he chased the victim around the convenience store parking lot
    for a short time, he decided to stop running when the victim
    left the convenience store parking lot and continued to run down
    the street.
    14
    608-609 (2005), S.C., 
    450 Mass. 173
    (2007).     See Commonwealth v.
    Libby, 
    472 Mass. 37
    , 40 (2015).    "Custodial interrogation is
    'questioning initiated by law enforcement officers after a
    person has been taken into custody or otherwise deprived of his
    freedom of action in any significant way.'"     Commonwealth v.
    Kirwan, 
    448 Mass. 304
    , 309 (2007), quoting Commonwealth v. Jung,
    
    420 Mass. 675
    , 688 (1995).
    The parties disagree as to whether the defendant was in
    custody during the interview.     The question turns "primarily on
    the objective circumstances of the interrogation, and not on the
    subjective views of either the interrogating officers or the
    person being questioned."    Commonwealth v. Sneed, 
    440 Mass. 216
    ,
    220 (2003).   Circumstances that may shed light on the custody
    analysis include, but are not limited to, (1) the place of the
    interrogation; (2) whether the officers have conveyed to the
    person being questioned a belief or opinion that he or she is a
    suspect; (3) the nature of the interrogation; and (4) whether
    the suspect was free to end the interview.     See Commonwealth v.
    Medina, 
    485 Mass. 296
    , 300-301 (2020) (four-factor Groome test
    provides framework but does not limit court's obligation to
    consider all relevant circumstances); Commonwealth v. Groome,
    
    435 Mass. 201
    , 211-212 (2001).     Here, based on the totality of
    15
    the circumstances, we conclude that the defendant was in custody
    during the interrogation.10
    The closed-door questioning took place in a seven foot by
    seven foot interview room at the police station.   See
    Commonwealth v. Bookman, 
    386 Mass. 657
    , 660 (1982), citing
    Commonwealth v. Alicea, 
    376 Mass. 506
    , 513 (1978) ("We recognize
    that there is a particular coercive element inherent in an
    interview at a police station").   See also Commonwealth v. Baye,
    
    462 Mass. 246
    , 254 (2012) (interrogation custodial where, among
    other factors, defendant interrogated for two hours in
    windowless room at police station); Commonwealth v. Magee, 
    423 Mass. 381
    , 385 (1996) (interrogation custodial where, among
    other factors, defendant interviewed in closed room at police
    station).
    The officers explicitly told the defendant that he was not
    in custody, and that he was considered a witness rather than a
    10The defendant also argues that he was transported
    involuntarily to the police station. We do not agree. The
    judge who heard the motion to suppress found that two police
    officers arrived at the defendant's home at approximately 10:30
    A.M. and informed the defendant and his mother that they wanted
    to bring the defendant to the police station for questioning.
    Although the defendant's mother, whose primary language is
    Spanish, testified at the hearing on the motion to suppress that
    the officers informed her that the defendant was required to
    accompany them, the judge found that the officers gave the
    defendant an option, and that he voluntarily agreed to accompany
    them to the station. This finding is not clearly erroneous.
    See Commonwealth v. Woollam, 
    478 Mass. 493
    , 505 (2017), citing
    Commonwealth v. Tremblay, 
    460 Mass. 199
    , 205 (2011).
    16
    suspect; however, despite maintaining a conversational tone, the
    officers asked him pointed questions from the beginning about
    where he was and what he was doing on the night in question.
    That is, the focus of the questioning was the defendant's own
    actions, rather than his observations of what other people were
    doing.11   See 
    Magee, 423 Mass. at 385
    (interrogation custodial
    where, among other things, questioning centered on defendant's
    potential criminal involvement).   Contrast Commonwealth v.
    Amaral, 
    482 Mass. 496
    , 501-502 (2019) (defendant "heavily
    influenced" direction of interrogation); Commonwealth v.
    Woollam, 
    478 Mass. 493
    , 507 (2017), cert. denied, 
    138 S. Ct. 1579
    (2018) ("the defendant controlled the parameters of the
    interview, indicating which questions he would answer and which
    he would not"); Commonwealth v. Shine, 
    398 Mass. 641
    , 648-649
    (1986) (questioning noncustodial where only questions asked were
    "natural preliminary questions designed to determine the
    defendant's identity and what he knew about the crime").
    Finally, where, as here, the defendant's age was known to
    the police, we consider the fact that the defendant was
    seventeen at the time of the interview.   See J.D.B. v. North
    Carolina, 
    564 U.S. 261
    , 277 (2011) ("so long as the child's age
    11In fact, approximately twenty-four minutes into the
    interview, the defendant asked the officers why he was being
    questioned and if he was a suspect.
    17
    was known to the officer at the time of police questioning, or
    would have been objectively apparent to a reasonable officer,
    its inclusion in the custody analysis is consistent with the
    objective nature of that test").   We are mindful that "a
    reasonable child subjected to police questioning will sometimes
    feel pressured to submit when a reasonable adult would feel free
    to go."
    Id. at 272.
    Although none of the above factors is alone determinative,
    taken together they support a finding that the defendant was in
    custody during the entirety of the interrogation.   See 
    Baye, 462 Mass. at 253-254
    (presence of many custodial factors supported
    determination that suspect was in custody).
    ii.   Validity of waiver.   As mentioned, prior to
    questioning, the officers told the defendant that he was neither
    a prisoner nor a suspect, but instead was a witness.     They also
    minimized the importance of Miranda protections, telling him
    that everyone to whom they speak is advised of his or her
    rights.   The defendant argues that, given his age at the time of
    the interrogation, the tactics that the officers used resulted
    in an invalid waiver of his Miranda rights.   Although we do not
    condone the interrogation methods used, we agree with the judge
    who heard the motion to suppress (motion judge) that the
    defendant knowingly waived his Miranda rights.
    18
    The validity of a Miranda waiver depends on the totality of
    the circumstances, including "promises or other inducements,
    conduct of the defendant, the defendant's age, education,
    intelligence, and emotional stability, experience with and in
    the criminal justice system, physical and mental condition, the
    initiator of the discussion of a deal or leniency (whether the
    defendant or the police), and the details of the interrogation,
    including the recitation of Miranda warnings."   Commonwealth v.
    Jackson, 
    432 Mass. 82
    , 86 (2000), quoting Commonwealth v.
    Mandile, 
    397 Mass. 410
    , 413 (1986), S.C., 
    403 Mass. 93
    (1988).
    Here, the defendant appeared alert, calm, and composed.      He
    indicated that he was in high school and demonstrated no
    difficulty communicating with or understanding the officers.     As
    each of the Miranda rights was read to the defendant from a
    printed form, the defendant nodded and responded affirmatively
    to indicate that he understood.   The defendant then readily
    signed the form acknowledging that he had been informed of and
    understood his Miranda rights.
    The motion judge noted his concern that investigators used
    tactics that "could comprise 'minimization' and 'trickery'."
    See Commonwealth v. DiGiambattista, 
    442 Mass. 423
    , 433 (2004).
    We share that concern, especially because the defendant was
    19
    seventeen years old at the time.12   However, given the totality
    of the circumstances, we agree with the motion judge that the
    investigators' comments did not change the fact that the
    defendant gave every indication that he understood his Miranda
    rights and voluntarily relinquished them.    See Commonwealth v.
    Tremblay, 
    460 Mass. 199
    , 208 (2011).
    b.   Voluntariness of statement.   The defendant separately
    contests the voluntariness of his statement.    See 
    Magee, 423 Mass. at 387
    ("Due process requires a separate inquiry into the
    voluntariness of the statement . . .").     The test for
    voluntariness is "whether, in light of the totality of the
    circumstances surrounding the making of the statement, the will
    of the defendant was overborne to the extent that the statement
    was not the result of a free and voluntary act" (citation
    12In 2010 when the interrogation took place, the defendant,
    as a seventeen year old, did not have the benefit of having an
    "interested adult" present to ensure a knowing and voluntary
    waiver of rights. This court held in Commonwealth v. A
    Juvenile, 
    389 Mass. 128
    , 133-134 (1983), that juveniles
    undergoing interrogation by the police were entitled to the
    presence of an "interested adult" who would offset the inherent
    imbalance present during police and juvenile interactions.
    However, because juveniles were then defined as persons under
    the age of seventeen, see Commonwealth v. Carey, 
    407 Mass. 528
    ,
    537 (1990), this protection was held to apply only to those
    under the age of seventeen. See, e.g., Commonwealth v. Ray, 
    467 Mass. 115
    , 132 (2014). After the enactment of St. 2013, c. 84,
    which "amended an array of statutory provisions to treat
    seventeen year olds as juveniles," the court expanded the
    interested adult rule to apply to seventeen year old individuals
    on a prospective basis. Commonwealth v. Smith, 
    471 Mass. 161
    ,
    162, 167-168 (2015).
    20
    omitted).   
    Tremblay, 460 Mass. at 207
    .    See Commonwealth v.
    Selby, 
    420 Mass. 656
    , 663 (1995), S.C., 
    426 Mass. 168
    (1997).
    "Relevant factors include, but are not limited to, 'promises or
    other inducements, conduct of the defendant, the defendant's
    age, education, intelligence and emotional stability, experience
    with and in the criminal justice system, physical and mental
    condition, the initiator of the discussion of a deal or leniency
    (whether the defendant or the police), and the details of the
    interrogation, including the recitation of Miranda warnings.'"
    Magee, supra at 388, quoting 
    Mandile, 397 Mass. at 413
    .
    As discussed, the defendant appeared composed, of at least
    average intelligence, and emotionally stable.    He answered
    questions responsively, and there were no signs of coercion.     As
    for the investigatory tactics used, after informing the
    defendant of his Miranda rights, the officers continued to
    stress that he was merely a witness.   They told the defendant
    that he was one of "a bunch of people" they were talking to
    about the events on the night in question, and that they wanted
    his "perspective on things."   Twenty-four minutes into the
    interview, when the defendant questioned whether he was a
    suspect, the officers once again reassured him that they were
    speaking with many other people as well.    The deception at issue
    here involved putting the defendant at ease rather than
    ratcheting up the pressure of the conversation.    Although we do
    21
    not condone deception designed to give a defendant a false sense
    of security, particularly a defendant who is a minor, here,
    given the other factors present, the officers' deception cannot
    be said to have affected the voluntariness of his statement.
    See 
    DiGiambattista, 442 Mass. at 432
    (police use of trickery
    does not compel suppression).    We therefore agree with the
    motion judge that the defendant's statements were voluntarily
    made.
    c.     Invocation of right to remain silent.   Approximately
    fifty-five minutes into the interview, the defendant invoked his
    right to remain silent by saying, "I'm done talking."     In
    response, the officers informed the defendant that the victim
    had died and asked him if he wanted to view surveillance
    footage.    The interrogation finally ended when, after reviewing
    the surveillance footage and continuing to proclaim his
    innocence, the defendant told the officers, "I'm done.     I'm
    done.    You come back at me when I have my lawyer, because I'm
    done."
    As the Commonwealth concedes, the officers failed
    scrupulously to honor the defendant's clear invocation of his
    right to silence.    Commonwealth v. Neves, 
    474 Mass. 355
    , 364
    (2016), quoting Commonwealth v. Smith, 
    473 Mass. 798
    , 807 (2016)
    ("A postwaiver invocation must be 'scrupulously honor[ed]' by
    the police" [citation omitted]).    Thus, everything the defendant
    22
    said after invoking his Miranda rights should have been
    suppressed.   See Smith, supra at 808-809.   Nevertheless, we
    conclude that the improperly admitted portion of the defendant's
    statement did not constitute reversible error.
    Because the defendant moved to suppress the statements to
    investigators, we examine whether admission of the defendant's
    statements was harmless beyond a reasonable doubt.     Commonwealth
    v. Hoyt, 
    461 Mass. 143
    , 154 (2011).   "When analyzing whether an
    error was harmless beyond a reasonable doubt, 'we ask whether,
    on the totality of the record before us, weighing the properly
    admitted and the improperly admitted evidence together, we are
    satisfied beyond a reasonable doubt that the tainted evidence
    did not have an effect on the jury and did not contribute to the
    jury's verdicts.'"    Commonwealth v. Molina, 
    467 Mass. 65
    , 79
    (2014), quoting Commonwealth v. Tyree, 
    455 Mass. 676
    , 701
    (2010).
    Here, the information the defendant provided after he
    announced that he was "done talking" was, for the most part,
    cumulative of the statement he had already made.     After invoking
    his right to silence, the defendant continued to insist, as he
    did earlier, that although he chased the victim in the
    convenience store parking lot, he ended the pursuit soon
    afterwards, and he was never behind the house where the victim's
    body was recovered.   The admission of the portion of the
    23
    defendant's statement made after his invocation of silence was,
    therefore, harmless beyond a reasonable doubt.    See Commonwealth
    v. Galicia, 
    447 Mass. 737
    , 747-748 (2006) (erroneously admitted
    evidence cumulative of properly admitted evidence and therefore
    harmless beyond reasonable doubt).
    4.   Involuntary manslaughter instruction.    The judge denied
    the defendant's request for an instruction on involuntary
    manslaughter at the close of the evidence.   The defendant
    contends that the failure to instruct on this point was error
    because if the jury found that someone else stabbed the victim,
    they could have found that the defendant did not share the
    intent to kill.   See 
    Rakes, 478 Mass. at 32
    .    Because the judge
    did not provide an involuntary manslaughter instruction, the
    jury did not have the option of finding the defendant guilty of
    a lesser homicide offense.   The judge did not err.
    "Involuntary manslaughter is an unlawful homicide
    unintentionally caused by an act which constitutes such a
    disregard of probable harmful consequences to another as to
    amount to wanton or reckless conduct" (quotation and citation
    omitted).   Commonwealth v. Carrillo, 
    483 Mass. 269
    , 275 (2019).
    "[W]anton or reckless conduct is conduct that creates a high
    degree of likelihood that substantial harm will result to
    another."
    Id., quoting Model Jury
    Instructions on Homicide 88
    (2018) (involuntary manslaughter).   See Commonwealth v.
    24
    Welansky, 
    316 Mass. 383
    , 399 (1944).    "In determining whether an
    involuntary manslaughter instruction must be given, we ask
    whether any reasonable view of the evidence would have permitted
    the jury to find wanton and reckless conduct rather than actions
    from which a plain and strong likelihood of death would follow"
    (quotations and citation omitted).     Commonwealth v. Braley, 
    449 Mass. 316
    , 331 (2007).     We conclude that the circumstances here
    did not warrant such an instruction, even viewing them in the
    light most favorable to the defendant.     See Commonwealth v.
    Moseley, 
    483 Mass. 295
    , 303 (2019).
    Based on the evidence presented to the jury, the defendant,
    with a knife in his hand, chased the victim around the parking
    lot of a convenience store.     Minutes later, the defendant was
    spotted with another man pursuing the victim up the street.       Two
    witnesses testified that they heard slapping noises and groaning
    coming from the area where the two men had chased the victim.
    Those two witnesses also saw arms flailing while two men
    attacked the victim.     D'Alessandro testified that he heard the
    two attackers speak to one another just after the attack:        one
    asked, "Did you get him?     Did you get him?", and the second
    responded, "Yes I got him."     The victim was stabbed repeatedly
    with a knife in the chest cavity, with stab wounds entering the
    victim's lungs.
    25
    Because it is obvious that stabbing the victim created a
    plain and strong likelihood that death would follow, an
    involuntary manslaughter instruction was not warranted.   See
    Commonwealth v. Pagan, 
    471 Mass. 537
    , 547, cert. denied, 
    136 S. Ct. 548
    (2015) (involuntary manslaughter instruction not
    warranted where defendant stabbed victim in abdomen with eight-
    inch blade); Commonwealth v. Pierce, 
    419 Mass. 28
    , 33 (1994)
    (involuntary manslaughter instruction not warranted where victim
    received multiple stab and slash wounds, each sufficient to
    cause death).
    Further, although we acknowledge that two or more joint
    venturers can participate in a criminal act with different
    mental states with respect to that act, see Commonwealth v.
    Tavares, 
    471 Mass. 430
    , 441 (2015), there was no basis for such
    a finding here.   Even if the jury had found that the defendant
    was not the individual who stabbed the victim, evidence of the
    circumstances surrounding the beating established that the
    defendant knew that there was a plain and strong likelihood that
    death would result from the joint actions of the attackers.     See
    Commonwealth v. Tague, 
    434 Mass. 510
    , 518-519 (2001), cert.
    denied, 
    534 U.S. 1146
    (2002) (involuntary manslaughter
    instruction not warranted where multiple people beat victim to
    death with variety of weapons, including knives).   We discern no
    26
    error in the trial judge's denial of the defendant's request for
    an instruction on involuntary manslaughter.
    5.   Postconviction motions.     After his conviction, the
    defendant moved for a new trial, arguing that his trial counsel
    was ineffective for failing to uncover additional third-party
    culprit evidence, and that he was unfairly deprived of
    exculpatory evidence.     The defendant sought posttrial discovery
    as well as an evidentiary hearing in connection with the motion
    for a new trial.   He now appeals from the denial of his
    postconviction motions.
    a.   Failure to investigate.     In December 2013, Garnham was
    shot and killed in Pittsburgh, Pennsylvania, by a State police
    trooper during a standoff with police after having kidnapped and
    threatening to kill his former girlfriend's baby.     The defendant
    faulted his trial counsel for failing to investigate the death,
    claiming that, as a result, the attorney failed to discover the
    additional evidence that Garnham had admitted to his former
    girlfriend that he stabbed the victim.
    A defense attorney is considered to have provided
    ineffective assistance in defending a charge of murder in the
    first degree if an error made "was likely to have influenced the
    jury's conclusion."     Commonwealth v. Wright, 
    411 Mass. 678
    , 682
    (1992), S.C., 
    469 Mass. 447
    (2014) (substantial likelihood of
    miscarriage of justice standard).     See G. L. c. 278, § 33E.   An
    27
    attorney's strategic or tactical decision constitutes error
    "only if it was manifestly unreasonable when made" (citation
    omitted).    Commonwealth v. Coonan, 
    428 Mass. 823
    , 827 (1999).
    The decision not to investigate Garnham's death was not
    manifestly unreasonable.     There was no reason for trial counsel
    to believe that undertaking such an investigation would have
    yielded any information that would have been helpful to the
    defendant.    Although, at the time of his death, Garnham was
    expected to return to Massachusetts to testify in Jean's trial
    for murder, he already had testified in Cruz's trial earlier
    that year.    And nothing about the particular circumstances in
    which Garnham died suggested a connection between his death and
    the killing of the victim.    See Commonwealth v. Watt, 
    484 Mass. 742
    , 764 (2020) (no error in failing to investigate speculative
    theories).   As trial counsel did not err in this aspect of the
    case, there was no ineffective assistance.
    Even if we determined that trial counsel did err in failing
    to request the police reports prepared in connection with
    Garnham's death, such reports likely would not have influenced
    the jury's conclusion.     First, assuming Garnham was truthful
    when he confessed to being the person who stabbed the victim,
    that fact would not have exculpated the defendant.13    As
    13One eyewitness testified that he saw two attackers in the
    back yard, and a second eyewitness testified that there were
    28
    discussed, to prove the defendant guilty as a joint venturer,
    the Commonwealth needed only to demonstrate that the defendant
    was engaged with others in the attack with the requisite intent.
    See 
    Rakes, 478 Mass. at 32
    .   Second, the statement from
    Garnham's former girlfriend would have been cumulative to
    evidence that the defense had presented at trial demonstrating
    that Garnham was involved in the attack and, more specifically,
    that he told others of his involvement.14   The failure to
    discover and present such evidence is not ineffective
    assistance.15   See Commonwealth v. Freeman, 
    442 Mass. 779
    , 791
    (2004), S.C., 
    451 Mass. 1006
    (2008).
    three attackers. However, both testified that only one of the
    attackers wore white; everyone else, including the victim, wore
    dark clothing. Thus, an assumption that Garnham, who wore a
    dark tank top, was one of the attackers does not suggest an
    inference that the defendant, who wore white, was not.
    14 Defense counsel explored Garnham's involvement in the
    killing through cross-examination of the Commonwealth's
    witnesses. The evidence elicited included testimony from
    Lawrence suggesting that Garnham allegedly disposed of a knife
    after the stabbing, and testimony from an investigator that in
    the days afterward Garnham cut his hair and then left the State.
    Trial counsel also called two witnesses who testified that
    Garnham made several statements implicating himself in the
    attack.
    15The defendant moved for postconviction discovery
    regarding any favorable treatment that the Commonwealth provided
    to Garnham, as well as any statements of Amber Nice, Garnham's
    girlfriend at the time of the victim's stabbing, who told police
    that Garnham admitted to being involved in the attack.
    "Posttrial discovery may be authorized where affidavits filed by
    the moving party 'establish a prima facie case for relief.'
    Mass. R. Crim. P. 30 (c) (4)[, as appearing in 
    435 Mass. 1501
                                                                      29
    b.     Deprivation of Torrey's testimony.   Based on the
    evidence presented to the jury, including surveillance footage
    and Lawrence's testimony, Torrey attempted to hold the
    defendant's arm to prevent him from chasing the victim, but
    ultimately was unsuccessful.   Soon thereafter, Torrey drove to
    the house behind which the victim had been attacked and called
    for the defendant, Garnham, and Lawrence to get in her car.    She
    then drove away from the scene.   Torrey was indicted as an
    accessory after the fact in connection with the victim's
    killing.
    During Jean's trial, which took place approximately eight
    months prior to the defendant's trial, the Commonwealth sought a
    court order granting Torrey immunity from prosecution, but later
    (2001)]." Commonwealth v. Sealy, 
    467 Mass. 617
    , 628-629 (2014),
    citing Commonwealth v. Daniels, 
    445 Mass. 392
    , 407 (2005). "To
    meet the prima facie case standard for discovery under a motion
    for a new trial based on newly discovered evidence, a defendant
    must make specific, not speculative or conclusory, allegations
    that the newly discovered evidence would have 'materially aided
    the defense against the pending charges,' Commonwealth v.
    Tucceri, 
    412 Mass. 401
    , 405 (1992), and that this evidence, if
    explored further through discovery, could yield evidence that
    might have 'played an important role in the jury's deliberations
    and conclusions, even though it is not certain that the evidence
    would have produced a verdict of not guilty.'
    Id. at 414."
    Daniels, supra
    . That is, "the defendant must make a sufficient
    showing that the discovery is reasonably likely to uncover
    evidence that might warrant granting a new trial." Sealy, supra
    at 629, quoting 
    Daniels, supra
    . Here, because the defendant's
    conviction as a joint venturer does not depend on whether and to
    what extent Garnham was involved in the attack, it was not error
    to deny the defendant's motion for posttrial discovery on that
    issue.
    30
    withdrew its request.   Jean's counsel moved the trial judge to
    grant Torrey judicial immunity so that he could call her as a
    witness, but that motion was denied.   Torrey later invoked her
    right under the Fifth Amendment to the United States
    Constitution to remain silent in connection with the defendant's
    trial,16 and defense counsel did not seek judicial immunity for
    her.
    The defendant posits that because the Commonwealth withdrew
    its application to grant Torrey immunity, her testimony would
    have been unfavorable to the Commonwealth and, conversely,
    favorable to the defendant.    Thus, he asserts that the
    Commonwealth improperly prevented Torrey from providing
    testimony that may have exculpated him, and that the judge who
    decided the postconviction motions (postconviction judge) erred
    in failing to order an in camera hearing to learn the substance
    of Torrey's potential testimony.    However, other than pointing
    to the Commonwealth's decision not to seek immunity from
    prosecution for Torrey, the defendant has not provided any
    support for this claim.    That is, he has failed to explain how
    Although the Commonwealth had dismissed the indictment
    16
    against Torrey by the time of the defendant's trial, she
    presumably could have been reindicted.
    31
    Torrey's testimony might have exculpated him.      There was no
    error.17
    6.    Review under G. L. c. 278, § 33E.    Aside from the
    arguments raised on appeal, the defendant points to three other
    issues that, he argues, together warrant relief pursuant to
    G. L. c. 278, § 33E.     We do not agree.
    First, he contends that trial counsel erroneously declined
    a humane practice instruction with regard to the statements he
    made to police.    In order to be entitled to a humane practice
    instruction, the voluntariness of the defendant's statements to
    police must be a live issue at trial.       Commonwealth v. Gallett,
    
    481 Mass. 662
    , 686-687 (2019).     Although the defendant raised
    the voluntariness of his statements in a motion to suppress
    pretrial, that motion was denied; the issue was not revisited at
    trial.     Consequently, the trial judge was not required to give a
    humane practice instruction.     See 
    Amaral, 482 Mass. at 506-507
    .
    17The postconviction judge did not err in denying the
    defendant's motion without a hearing. A judge need not hold a
    hearing in connection with deciding a motion for a new trial if
    "no substantial issue is raised by the motion or affidavits."
    See Mass. R. Crim. P. 30 (c) (3), as appearing in 
    435 Mass. 1501
    (2001). The postconviction judge determined that the documents
    filed with the defendant's motion provided all of the
    information necessary for him to decide the motion, and that
    thus a hearing was unnecessary. He did not abuse his discretion
    in this matter. See Commonwealth v. Goodreau, 
    442 Mass. 341
    ,
    348-349 (2004).
    32
    Second, the defendant points to the fact that Garnham's
    brother, who testified as to inculpatory statements made by
    Garnham, appeared in handcuffs without a jury instruction to
    mitigate potential prejudice.     However, prior to his testimony,
    trial counsel agreed to a procedure where the witness would be
    in place prior to the arrival of the jury, and keep his hands
    from view.   As the defendant presents no evidence to suggest
    that the jury were aware that the witness was in handcuffs,
    there was no error in failing to provide an instruction on the
    matter.
    Finally, the defendant points to his "youth" and
    "impetuosity," combined with "spontaneous rapidly unfolding
    events," as factors to be considered under § 33E.     As the
    defendant was a juvenile at the time of the killing, his penalty
    for murder in the first degree was a sentence of life in prison
    with, rather than without, the possibility of parole.     See
    Diatchenko v. District Attorney for the Suffolk Dist., 
    466 Mass. 655
    , 673 (2013), S.C., 
    471 Mass. 12
    (2015).     Therefore, the
    defendant's youth, and everything that comes with it, including
    impetuosity, in fact was taken into consideration.     See
    id. at 669-670.
      As for the spontaneous nature of the rapidly unfolding
    events, we do not agree that this factor deserves any additional
    consideration under § 33E, given that the defendant is the one
    who set those events in motion.
    33
    Upon review of the above issues, and the entire record, we
    discern no error that resulted in a substantial likelihood of a
    miscarriage of justice.   For that reason we decline to order a
    new trial or reduce the degree of guilt under G. L. c. 278,
    § 33E.
    Conclusion.   For the foregoing reasons, the defendant's
    conviction is affirmed.   The orders denying the motions for
    postconviction discovery and for a new trial are also affirmed.
    So ordered.