Michael Jackson used to wet his bed.

Despite being 50 years old at the time of his death from acute Propofol intoxication in 2009, the 'Thriller' singer's personal doctor, Conrad Murray claims he regularly "peed the bed".

Speaking in documentary 'Michael Jackson and the Doctor: A Fatal Friendship' Conrad – who was found guilty of the involuntary manslaughter of the late singer on Monday (07.11.11) – said: "The bedroom that he slept in I had to persuade him, eventually to have it cleaned.

"He peed the bed. It did not smell good. It was mildew, and I had to get it clean."

Dr. Murray also says he believes the singer may have had a psychological problem that caused him to wet himself, adding: "Who would ever believe that a man his age would still be wetting his bed?"

Also in the documentary – which members of Michael's family and the executors of his estate have attempted to stop from airing in the US later today (11.11.11) – Dr. Murray claims he was the 'Beat It' star's only friend.

He said: "I went there to take care of a healthy man, who said he was fine, to just keep surveillance. But once I got in there I was entrapped.

"He had very close acquaintances, but friends he did not have. He told me, 'I've found one friend, which is you'."

Dr. Murray is currently remanded in custody until his sentencing, which will take place at the end of this month.