TMZ are saying he is dead
BBC are saying that TMZ are saying he is dead
Sky news are saying that TMZ say he is dead.
It all comes down to TMZ.
If you actually watch sky news it isn't actually a confirmed fact that it was Micheal Jackson that was admitted to hospital. Just someone "fitting his description" - although I think (from TMZ) that his family have been seen rushing to the hospital which is probably a pretty big clue.
I am not doubting that he has been admitting to hospital. And indeed he may be dead. He probably is....but at the end of the day there is a single source of info and TBH I don't know how trusted it is...