The way this fella died sounds very like a high profile case in Sydney a few years ago where the security at star city casino held a guy down and killed him. Basicly they put too much pressure on his chest and he could breath properly, the security were in house and pretty poorly trained. The main reason I know anything about it is it had quite a impact on any training security guards have to do. There's a specific name for the way of dieing that I'm thinking of but I can't remember what it's called, guess it's a little late in the day for me. EDIT: Thank only1asterisk, that's the name i was after. Positional asphixiation.