Washington, July 4 Organisers of late King of Pop Michael Jackson's comeback concerts have revealed that the singer had passed a gruelling five hour medical test "with flying colours".

AEG Live CEO Randy Phillips denied that the 'Thriller' hitmaker had cheated a screening process he underwent just weeks before his death.

He revealed that tour insurers wanted Jackson to go through a rigorous examination, which the singer breezed through.

"He absolutely, 100 per cent, had a close to five-hour physical. The (insurance) carriers flew in a doctor of their choice from New York and he did an extensive battery of tests. We were obviously never privy to the actual medical reports, because this was confidential medical information between the doctor and the patient. However, we were told that he passed with flying colours," Contactmusic quoted him as saying.

Jackson died from a cardiac arrest on June 25, just weeks before he was due to begin his tour. (ANI)