A juvenile’s statement that she had drugs in her coat pocket after she was placed in “investigative detention” should have been suppressed because she was “in custody” where she had been handcuffed and placed in the backseat of a patrol car for suspicion of drug possession after a vehicle in which she was a passenger was stopped for a traffic violation; however, the “exclusionary rule” did not preclude the admission of the physical evidence obtained because there was no evidence of actual coercion.