David Gest has been found dead at a London hotel, Metropolitan police have confirmed.
The star was found on Tuesday 12 April and the cause of death is not yet known, a statement explains.
It reads: "Police were called at 10:17hrs on Tuesday 12 April to the Four Seasons hotel, in Westferry Circus, E14, to reports of an unexplained death of a man in his 60s.
"London Ambulance Service were called to the scene. Life was pronounced extinct at the hotel.
"A post-mortem will be held in due course. Next of kin are in the process of being informed."
David was about to embark on a UK tour, titled 'David Gest Is Not Dead But Alive With Soul', a reference to the now infamous 'Celebrity Big Brother' mix-up, which saw Tiffany Pollard confuse Gest with Angie Bowie's ex-husband, David.
David won himself thousands of new fans on the show, but was forced to quit due to serious ill-health.
The US-born star was a good friend of Michael Jackson, and married Liza Minelli in 2002. The couple parted ways just over a year later, in October 2003.
In 2006, he appeared on 'I'm A Celebrity... Get Me Out Of Here!', finishing fourth in the series.
As well as impressing viewers at home, David delighted his fellow campmates, and went on to be at usher at former Busted star Matt Willis's wedding.