The medical examiner has determined that Heath Ledger died of "acute intoxication by the combined effects of oxycodone, hydrocodone, diazepam, temazepam, alprazolam, and doxylamine."
In other words, dude downed a whole bunch of pills and died. The death has officially been ruled an accidental overdose.
I think Sam Lutfi needs to be investigated over this. Sounds like his work.
(source)
