The last thread closed before I could respond but the drug screen on TM's body at autopsy were negative for drugs and alcohol. So even if he smoked pot before, he hadn't done it in at least 3 weeks or so. It takes about 30 days for traces of pot to clear out of your system, less if you don't smoke much.
TM was already in trouble, suspended from school. He probably wouldn't bring any with him when he's on a trip with his dad.
I never heard that the tox tests were in. Is that today's news?