Ronnie Kray allegedly confessed to murdering Marilyn Monroe . A former associate of Ronnie Kray has shockingly alleged that the infamous gangster was behind the death of the Hollywood icon. According to the Kray twins' ex-publicist, James Campbell, he personally heard the confession from Ronnie himself. Kray is said to have boasted that he was contracted by the American mafia for the hit, describing it as a 'piece of cake. ' These astonishing new allegations are set to reignite the controversy