If they described it as an “empty marijuana baggie,” and he was suspended from school for 5 days, I assume that it was pretty freaking clear that the baggie had very recently been emptied of marijuana, but that it still smelled like marijuana (or had marijuana residue, or what have you).
SANFORD, Fla. — A family spokesman says slain Florida teenager Trayvon Martin was suspended from school last month for having a baggie that contained marijuana residue in his book bag.
http://www.dailyjournal.net/view/story/69058dff0e374adbb4f01bd173921cf3/US—Neighborhood-Watch-Death/