Sorry for the loss. My guess is somewhere in there room/bathroom/closest. Prolly a place that is kinda personal or something. Just search around when there gone. I don't think they would throw it away either. How did he caught being high???

I would personally be pissed off because if somebody else got in trouble for something and somebody searched my room...damn. I would search through all there shit and if they caught you be like "I thought I could search through your stuff too!!!." lol