As fоund by a jury, Arthur A. Gauthier, the defendant, committed an unarmed assault with intent to rob 1 and an assault and battery 2 upon Penny Broach on High Street in Salem at 10:00 p.m. on April 21, 1982. One-half hour later, on Ward Street, he committed an armed assault with intent to rob 3 and assault and battery by means of a dangerous weapon 4 upon Patricia Carney. On his appeal, Gauthier urges that the trial judge erred in: (1) refusing to suppress identifications made by the victims; (2) limiting, by threat of nullifying instructions, cross-examination to establish bias of a government witness; and (3) refusing to instruct the jury that the crime of unarmed assault with intent to rob requires proof of actual force and violence.
In one night, Gauthier inflicted more than his share of trauma. As a robber, fortunately, he was hapless. Broach, the first victim, noticed Gauthier because he appeared to be watching her intently as she entered Steve’s Quality Market in downtown Salem. She noticed his stare, his eyes, his glasses, his long greasy hair, his acne. When Broach emerged from the market, the man she had noticed followed her, reached for Broach’s arm, and demаnded her money. Broach kicked him in the groin and hurried to the store for safety. She made a report to the police at about 10:15 p.m.
Patricia Carney spotted Gauthier at 10:30 p.m. as she wаs walking home along Lafayette Street. Her attention was drawn to Gauthier because she thought it odd that he was wearing sunglasses at night. As Carney turned down Ward Street, she heard footsteps behind her. Thе source of the footfalls grabbed *587 Carney by the hair and spun her around, at which she screamed. Her screams provoked threats from the assailant: “If you don’t shut up, I’m going to put a bullet right through your hеad.” When that failed to induce silence the assailant struck Carney with a metal object she took to be a gun. A neighbor, Daniel Benyue, heard the commotion, looked out his window, and shouted: “Stop or I’ll blow your . . . head off.” Gauthier found it expedient to unhand Carney and leave the scene. Carney immediately ran to her apartment on Ward Street and called the police.
1.
Refusal to suppress identifications.
On thе basis of the complaints and descriptions telephoned in by Broach and shortly thereafter by Carney, the police picked up the defendant within fifteen minutes of the second incident. Two police officers at once drove Gauthier in a police cruiser to Carney’s residence for a “showup” identification. Cases acknowledging the utility and permissibility of arranging showuрs, promptly after the crime, are collected in
Commonwealth
v.
Coy,
The Carney identification went bad, the defendant argues, because he was asked to repeat out loud to Carney for voice identification purposes the threat he had uttered, i.e., “If you don’t shut up, I’m going to kill you.” Carney said Gauthier sounded like her assailant and, indeed, smelled like her assailant. Voice identification is suspect, although not unlawful per se, under
Commonwealth
v.
Marini,
Marini,
however, dealt with voice identification at trial. The court noted that “there will be occasions when standard precautions may well be overlooked, for example, when a suspect is apprehended very soon after the criminal event and is brought promptly to the victim for direct voice identification.”
Id.
at 517. See
Wise
v.
United States,
Gauthier argues that the second showup, to Broach (who was the first victim), was unnecessary and hence unduly suggestive, because Gauthier by then had already beеn identified in connection with the attack on Carney and was in custody. There was time to arrange a lineup. We think the police, in conducting their investigation, were entitled to establish quickly whethеr the same man was involved in the two attacks. See
Commonwealth
v.
Fay,
2. Limitation of cross-examination. Daniel Benyue, Carney’s neighbor, testified about seeing the attack on Carney *589 from his window and scaring off the attacker. He identified Gauthier аs the assailant. 7 Prior to cross-examining Benyue, defense counsel informed the court at a bench conference that he proposed to ask Benyue if he had been arrested fоr forgery, if those charges were pending when he made a statement about the attack on Carney implicating Gauthier, if he had defaulted in appearances on those charges, and if those charges were dismissed shortly after he gave a statement to the police in the instant case.
The trial judge ruled that he would permit defense counsel to inquire of Benyue if he hаd stood accused of forgery. Were counsel to ask if the charge had been dismissed, the judge said he would explain to the jury that cases are dismissed for a wide variety of reasons and thаt the jurors were not to speculate why that charge had been dismissed. The judge also remarked, “I regard . . . putting in this accusation — as . . . very marginal, dramatically marginal, and I will say for the record it might well explode in the defendant’s [face,] [a]nd if it does, the defense has only itself to blame.”
When he took Benyue under cross-examination, defense counsel put no question about a forgery charge. He may have heeded the judge’s admonition that the proposed line of questioning might backfire. We are prepared, however, to consider the defendant’s point on thе basis of his contention that the judge’s comments at the voir dire were more than a damper; that they were a chiller. Cf.
Commonwealth
v.
Graziano,
There is force to thе argument that prompt dismissal of the forgery charge was admissible on the basis that favorable treatment of a prosecution witness is relevant to the question of bias.
Commonwealth
v.
Rodwell,
Assuming that the defense was entitled to take at face value the judge’s statement of intent about how he would instruct the jury, the limitation of cross-examination on bias does not amount to reversible error in this case. Benyue was not implicated in the crime, unlike the witness in
Commonwealth
v.
Lewis,
3.
Jury instructions.
Over objection, the trial judge instructed the jury that, to conviсt of assault with intent to rob, they must find that the defendant had “threatened bodily harm to [the victim] with the intention of taking from her person, against
*591
her will, money.” Relying on
Commonwealth
v.
Crowley,
Judgments affirmed.
Notes
G. L. c. 265, § 20.
G. L. c. 265, § 13A.
G. L. c. 265, § 18.
G. L. c. 265, § 15A.
Contrast
Commonwealth
v.
O’Loughlin,
The evidence is conflicting on whether Carney or a police officer asked Gauthier to speak. In ruling on the suppression motion, the trial judge said that he thought the request had been made by Carney.
Benyue had hoped to apprehend the defendant but that went awry. “He started walking slowly,” Benyue testified, “so I figured I had a chance to put on my pants and run down the stairs to try to catch him. . . . But in the meantime I got hung up with the phone. I had the receiver in one hand, the pants in the other and I fell down the stairs.”
