We consider here the constitutionality of a warrantless search of a bicyclist. The defendant was convicted of unauthorized possession of a controlled substance (phencyclidine, commonly known as PCP or angel dust) with intent to distribute. The defendant appeals, question *763 ing the denial of his motion to suppress the PGP found on him. The Appeals Court, with one judge dissenting, affirmed the judgment. Commonwealth v. Thibeau, 11 Mass. App. Ct 677 (1981). Because the police officer was not justified in stopping the defendant, we reverse.
The defendant was riding a bicycle down the middle of Center Street in Jamaica Plain around 10 p.m. on August 31, 1979. A marked police car, followed by an unmarked one, pulled up beside him. After looking toward the marked cruiser on his right, the defendant turned sharply to his left and pedalled down St. John Street. The officer in the unmarked car pursued him, siren blaring. For some 200 to 250 yards, the officer was unable to maneuver past the defendant, who alternately slowed and sped up on the bicycle. When finally able to pull alongside the defendant, the officer reached out and grabbed the defendant, forcing him and the bicycle to the sidewalk. He threw the defendant across the hood of the cruiser, and then turned him around so the two were facing. The officer noticed three manila-type change envelopes protruding from one of the defendant’s pockets. Recognizing these as commonly used to package drugs, the officer seized them and six others he found in a search of the defendant. The envelopes contained an herb laced with PCP.
A police officer may stop a person for a threshold inquiry where the officer has reasonable ground to suspect him of criminal activity. See
Commonwealth
v.
Ferrara,
The facts and inferences underlying the officer’s suspicion must be viewed as a whole when assessing the reasonableness of his acts.
United States
v.
Cortez,
Thus, the reasonableness of the officer’s suspicion must be assessed on the basis of two factors: the defendant’s use of a bicycle and his sudden left turn.
These circumstances are probably less suspicious than those in
Commonwealth
v.
Bacon,
In addition to challenging the propriety of the stop, the defendant questions the trial judge’s inference of intent to distribute. The sole evidence of that intent was the PCP seized; the record is silent on the number of doses or quantity of PCP involved. While we need not reach this point, we note that the number of packets into which the drug was divided, absent any evidence of quantity, is doubtful proof of intent to distribute.
Since the stop was not justified, the PCP should have been suppressed. The order denying the motion to suppress is reversed. In this case it is clear that if the motion to suppress had been allowed, the evidence that remained would have been insufficient to support a conviction. The defendant’s motion for a required finding of not guilty must now be allowed.
Judgment reversed.
Finding set aside.
Judgment for the defendant.
