He also hoarded hundreds of unreleased songs, old tape recordings, photographs and personal letters to US presidents and British royals including Princess Diana. The items have been stored in a gigantic warehouse the size of three aircraft hangars in the California hills.

They came to light as the world marked the first anniversary of the Thriller singers death at 50 and his mother Katherine released previously-unseen photos of the Jackson family including one of Michael gently holding a white dove.

The People has been shown photos of the inside of the warehouse, which is under 24-hour guard, and has agreed not to reveal its location. The contents are known only to the Jackson family and their advisers, who will decide on when and how to release them.

But experts are already predicting the hoard could be worth s1billion or even more, with the antiques alone being estimated at s100million.

The Aladdin's Cave also includes a collection of Disney souvenirs, original drawings from the 70-year-old Pinocchio film and highly-coveted first editions of the Harry Potter book.
But it is the un-released music of Jacko which could prove the most valuable of all with some family sources saying it could be worth an incredible s5billion over the next 25 years.
One source said: A year after Michael's death his records have sold for more than 800 million. There's still a huge market out there.
The family are said to be keen to ensure that profits from any sales would go to Jacko's three children Prince, 13, Paris, 12, and Blanket, eight, and to charities he supported.
Meanwhile Jackson's dad Joe yesterday launched a lawsuit against the stars physician Dr Conrad Murray, accusing him of negligence