David Gest reportedly died after suffering a stroke.
The popular entertainer - who passed away in April this year, aged 62 - died of a stroke, according to US attorney Edward Bearman, who has been dealing with his estate.
Edward told The Sun on Sunday newspaper: "I've been told David died from a stroke."
David was found dead in his hotel room on April 12, with police saying his death was being treated as "non suspicious".
A subsequent post-mortem said David died of "natural causes".
Gary Veazey, the executor of David's will, has confirmed the reason for his passing, saying: "He died of a stroke."
In May, David's bodyguard, Imad Handi, claimed to have heard the star suffer a fatal heart attack during their last phone conversation - four days before his body was found.
Imad - who was friends with David for 16 years - said he received a silent phone call, which he believes was the entertainer trying to ask for urgent help, in the days before his body was found.
He explained: "I answered the phone and was like, 'Hello, hello, hello?', and I heard something smash on the floor.
"Part of me froze and then the phone went dead. Knowing David and his OCD I thought, 'He's dropped something on the floor, he's going to hang up and clean it up. He'll call me back'. Unfortunately he didn't call me back.
"I did try and call that evening and on Saturday and there was no answer. I believe he passed away on the Friday."
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