Just another fucking idiot taking drugs.
It's a pity we will not hear any more music or collaborations from him but no sympathy for dumb fucks like this.
Google Lorazepam and tell me that you would make it the responsibility of your security guard for dosing you with this crap.
In the US you can basically get this stuff over the counter. Heath Ledger loved the drug culture in the US and look where it got him.
Accidental deaths? Probably. The average American thinks is must be safe but it should be obvious to them by now that the US government does NOT have your best interests at heart. Nobody will go against big pharma' and shit like this will simply become easier and easier to get. Buyer beware.