Beyoncé and Jay Z fired their late bodyguard for hiring a prostitute while on duty for them.

It has emerged the A-list couple were forced to let Norman 'Dutch Giant' Oosterbroek go after discovering he had hired the services of a prostitute while he was supposed to be working for them in Las Vegas.

The pair also discovered photographic evidence of Norman - who was accidentally killed by cops in Florida during an alleged break-in earlier this month - using their personal passports in a lewd act, according to the New York Daily News newspaper's Confidenti@l column.

The strapping 6 ft 5 in security guard's life seemed to be spiralling out of control in the months leading up to his death, allegedly succumbing to depression after losing his high-powered job and struggling with drug addiction.

A source said: ''Beyoncé and Jay Z were furious when they found out. They trusted Norman with their lives and then he went and did some pretty freaky things, and on video with a hooker. They were outraged.

''They really thought Norman was now a danger to Blue Ivy. From what I understand he was devastated, because a lot of people in the industry knew that he couldn't be trusted and not to hire him.''

Norman - who had worked for the likes of Nelson Mandela, Rihanna and Lady GaGa - was tasered to death by cops during the alleged September 2 break-in.

While carrying a ''white, powdery substance'', he is said to have broken into a woman's house in the nude, beating her until the police arrived to stop him. He later died in hospital from the electric shock.