Aftеr a trial before a jury in the Superior Court, Ceria was convicted on four indictments charging *231 him with the knife point assault and rape of two women. Prior to trial, he moved to suppress the victims’ identifications on the grounds (1) that his arrest on unrelated charges which led to thе identifications was not based on probable cause; (2) that his arrest was merely a pretext for obtaining his photograph for investigation of the sex crimes; and (3) that the identifications made at the probable cause hearing were unduly suggestive. After hearing, thе motion was denied. We find no error.
The judge made detailed findings of fact which the defendant does not challenge. We summarize those findings. Prior to April 4, 1978, Metropolitan District Commission police officers were advised that between November, 1977, and March, 1978, four women had been sexually assaulted while walking or jogging on the Esplanade. 1 The officers possessed a composite sketch of the assailant prepared by a police artist with the assistance of some of the victims. They also knew that the assailant usually approached his victims on a yellow motorized bicycle (moped).
On April 4, 1978, at approximately 7:00 p.m., Officers Dean and Powers stationed themselves in a marked cruiser under the Longfellow bridge at a point where they could observe (through binoculars) the walkways in and around the Esplanade. At the same time, Detective White positioned himself in an unmarked police vehicle at a second point where he could assist the other officers if necessary.
Shortly after the surveillance was established, Officеr Dean observed a woman jogging in the vicinity of the Longfellow bridge, followed closely by a man on an orange moped who resembled the composite sketch. While Dean advised White of the situation, Powers approached the moped on foоt, identified himself in a loud voice as a police officer, and asked the operator to stop. The operator (the defendant) shut out his lights and immediately “took off” at approximately thirty to thirty-five miles per hour. With *232 both police vehicles in pursuit, the dеfendant reached Storrow Drive and cut diagonally across it, nearly causing an accident as oncoming automobiles braked and swerved to avoid him. He proceeded down a street, and then returned to Storrow Drive, where he was finally stopped in а vehicular tunnel near the Government Center exit.
The defendant gave the officers his correct name and address but indicated that he did not have a license to operate the moped. When asked about its ownership, the defendant stated “first that he wаs the owner, then indicated that his father was the owner, then his guardian, then his foster father.” The judge found that, at this juncture the officers “were reasonably confused by what . . . were apparently evasive answers. They cited Ceria for operating to endanger and оperating without a license [and] . . . then arrested [him] for the cited offenses and for larceny of over $100 of the moped from [a] person or persons unknown.”
The defendant was booked on these charges at the Lower Basin police station. Since thе station lacked some of the necessary booking equipment, he was then taken to the Old Colony Station to be fingerprinted and photographed. See G. L. c. 263, § 1A. Ceria was then returned to the Lower Basin station, at which point his foster father and guardian arrived. The guardian established that he owned the moped, and the defendant was released. The judge found, however, that the question of the moped’s ownership “was not clear until after the photographing and fingerprinting stage at the Old Colony station.”
The next morning the defеndant’s photograph was inserted in an array by the detective in charge of the rape investigations, and the array was shown to the two victims in these cases. This procedure, which has not been challenged as suggestive, led to the defendant’s positive identification by both victims. The present charges followed. 2
*233 1. The defendant’s motion to suppress the photographic identification turns on the validity of the arrest pursuant to which his photograph was taken. The parties apparently agree that the defendаnt could not lawfully have been arrested for two of the offenses then charged. 3 The motion judge ruled that the defendant had lawfully been arrested on the third charge, larceny of the moped. Accepting the judge’s findings of fact as having adequate support in thе record, the defendant nevertheless contends that the police *234 did not have probable cause to make an arrest for larceny. We disagree.
The facts known to the officers when they first approached the defendant justified stopping him to inquire about his activity in the area. See
Commonwealth
v.
Anderson,
2. As his second point, the defendant contends that the arrest was “pretextual and conducted with the sole purpose of obtaining evidence to aid in the investigation of the Esplanade assaults.” The legitimacy of an arrest for one offense ordinarily will not depend on whether the officer subjectively believed that the аrrest might lead to incriminating information regarding another offense. Rather, police conduct is to be judged “under a standard of objective reasonableness without regard to the underlying intent or motivation of the officers involved.”
Scott
v.
United States,
The reasons underlying this view were succinctly stated in the First Circuit’s opinion in
United States
v.
McCambridge,
*236
While “we do not say that there could never be an egregious situation where an arrest on purely colorable grounds might be held invalid as ‘pretextual’”
(United States
v.
McCambridge, supra
at 870; see e.g.
Taglavore
v.
United States,
3. The defendant’s last point is that his identification by the victims at the probable cause hearing in the Boston Municipal Court was “unnecessarily suggestive” because the judge would not permit the identifications to be made by way of an in-court lineup. This, he claims, tainted the identifications made at the trial. The defendant had been ordered to be present that day, so that the hearing could go forward. Defense counsel had spоken to the prosecutor, and they had informally agreed that the defendant would be kept away from the courtroom until an oral request for a lineup could be made. The judge, however, took the position that the defendant had been ordered to bе in court that day and could not absent himself without leave of court; that there had been sufficient time to file a written motion for an alternative identification procedure; and that efforts to arrange such a procedure would delay the hearing and perhaps disrupt other cases to be heard that day.
*237
The probable cause hearing was a critical stage of the proceedings which would require the defendant’s presence (see
Commonwealth
v.
Britt,
Judgments affirmed.
Notes
The Esplanade is a park and recreationаl area located on the banks of the Charles River near downtown Boston.
The original charges for operating without a license, operating to endanger and larceny were ultimately dropped.
In the parties’ view, a person driving a moped cannot be arrested for operating without a license (G. L. c. 90, § 1B, inserted by St. 1976, c. 261, § 4) or for operating to endanger (G. L. c. 90, § 24[2] [a]). This view is based on the fact that G. L. c. 90, § 1, as amended by St. 1976, c. 261, §§ 2,3, now defines a “motorized bicycle,” and specifically excludes such vehicles from thе definition of “motor vehicles” as used throughout the chapter. This may not be an entirely correct interpretation of the law. General Laws c. 90, § IB, requires that a “motorized bicycle shall not be operated on any way by any person not possessing a vаlid driver’s license or learner’s permit,” and the statute renders the operation of motorized bicycles on public ways “subject to the traffic laws and regulations of the commonwealth.” Under G. L. c. 90, § 21, a police officer may arrest anyone operating a motor vehicle on a public way who does not have a license so to operate in his possession. The language of §§ IB and 21 would not authorize the defendant’s arrest for operating without a license. It has been held, however, that § 21 “does not by imрlication cut down the common law authority of an officer” to arrest.
Commonwealth
v.
Gorman,
We pass the question, however, since the defendant’s arrest for larceny (as will be next discussed) was proper. Any mistaken subjective impressions by the officers about their right to arrest for the vehicular offenses are therefore not critical since the determination of the validity of an arrest “is governed by an objective standard,”
Commonwealth
v.
Avery,
In
United States
v.
Arra,
This case bears no resemblance to
United States
v.
Crews,
