In re Devon B.

*520On April 15, 1988, New York City Police Officer David Driscoll, assigned to an anticrime patrol, was in uniform and driving an unmarked car at about 11:25 a.m. in the vicinity of Warren Street in Brooklyn. He observed the 15-year-old appellant standing on the street in a drug-prone area. Officer Driscoll recognized the appellant from the scene of a shooting, which had occurred a week earlier, and wanted to speak to him about it and about his reasons for not being in school.

When Officer Driscoll drove up next to the appellant and asked for his name, the appellant stammered and slowly backed…