Why did Michael Jackson Die?

We all know the tragedy that happened today :(. Michael Jackson died. It is said that he was in coma when the meds found him in his house. The mistery in this tragedy is: Why was he in coma? What happened to him?
Of course we know that after he was taken to the hospital he suffered a heart attack that cost his life.

As soon as more information about the above questions will be available I'll post them here so keep in touch by subscribing.

RIP MICHAEL JACKSON