Remus said, "Actually, Padfoot, that's not possible, Snape died at the end of this last school term. One of the house elves found him in his quarters, it looks like he had a heart attack. I don't know exactly what happened, but I heard that he was under a lot of stress; there was an accident during the exams and one of the first years, Neville Longbottom, Frank and Alice's son, was burned badly, and Snape didn't want to let Harry and Hermione take him to get help. There was going to be a governor's inquest, based on that and several other complaints, but it didn't happen, obviously."