http://m.nfl.com/news/0ap2000000046288/ Terrible news, he had been in trouble the last few years with drugs but many had thought he had turned things around. I don't think they have yet found the cause of death, but I would be surprised if it were due to any reason other than drug related. Feel bad for Andy, I couldn't imagine having to go through something like this.
That's got to be unbelievably difficult for a parent...always wondering what else you could have done, I'm sure....
