A police officer at Starbucks

"...You there. Yes, you. Come here for a moment." "Huh?" "Don't 'huh' me. Yes, you. Come over here." The young man addressed by the police officer darted his eyes around nervously, looking at his surroundings, and slowly approached the officer. His face was downcast and his ears were slightly flushed. One could say his behavior was suspicious... "You were looking this way just now, weren't you?" "Uh, no..."