Hannon were in a "black and white" police car, travelling south on Compton Avenue, in Los Angeles, near 56th Street, they saw six or seven persons on the sidewalk at the southeast corner of the intersection of those streets. The officers knew that the intersection was frequented by narcotic addicts. Officer Crowe, who was driving the car, drove it diagonally across the intersection to the curb at the southeast corner of the intersection where the persons were standing.
 Officer Hannon testified that he thought that, as a result of such driving, one of the "hypes" would run or give them (the officers) probable cause to get narcotics; that as the car approached the corner, he saw the defendant standing on the corner, with his back toward the car;that when the defendant turned around (facing the car) he was holding his hands in front of him, about waist high; defendant looked at the officers and then, with his right hand, put something into his mouth; then, with his left hand, the defendant threw a blue object over his head; the object landed on the sidewalk at a *569 place about 7 feet from defendant; when the object was thrown the officers were in the car which was about 12 feet from the defendant; Officer Hannon (witness) jumped out of the car, picked up the object and noticed that it was a balloon which was "knotted" near the end; through a hole in the balloon he saw a capsule therein with white powder in it; at that