The group have decided to call off their 'Wonderland' live show in light of recent events in Manchester.
The star was found in his London hotel room earlier today.
U.S. music producer and reality television star David Gest has been found dead at a hotel in London, aged 62.
A statement released by his friend, Imad Handi confirmed the star had died in a statement issued on Tuesday afternoon.
"It is with great sadness that I can confirm that David Gest has died today," the statement read.
"David was truly larger than life. He was not just a huge talent and a dear friend but a showbiz icon."
A statement from the Metropolitan Police say a post-mortem will be held in due course but there appear to be no suspicious circumstances.
Gest was close with Michael Jackson throughout his career, producing the TV special 'Michael Jackson: 30th Anniversary Celebration' in 2001 which was the last reunion of the King of Pop with his family.
Gest increased his profile in the UK with an appearance on Celebrity Big Brother in 2006 and then taking part again in January of this year but leaving the house early due to medical circumstances.
He was also known for his high-profile marriage to Liza Minnelli, marrying in 2002 but divorcing in 2007.