RIP Corey. Died from an apparent drug overdose.
Wait, did I get that right?
There. Much better.
Ah, I kid. Comedy: it's tragedy plus time.
It sounds like he was having a tough time with drugs for a while now. A quote from Haim in his Wikipedia article:
"I started on the downers which were a hell of a lot better than the uppers because I was a nervous wreck. But one led to two, two led to four, four led to eight, until at the end it was about 85 a day -- the doctors could not believe I was taking that much. And that was just the Valium -- I'm not talking about the other pills I went through".