The rock svengali was found unconscious in his room at the Sunset Marquis Hotel on Wednesday morning (27May15) after reportedly suffering a reported cardiac arrest. He was pronounced dead on the scene.

Sheehan was U2's tour manager for over three decades.

His death comes hours after U2 played the first of five nights at the Forum in Los Angeles.

Sheehan also worked with Led Zeppelin, Iggy Pop, Patti Smith and Lou Reed.