Was death plunge tycoon murdered by Russian gangsters who stitched him up for his fortune? Dissident claims mafia helped Scot Young hide £400m from his divorced wife then refused to give it back
• Tycoon's divorce from Michelle Young one of most expensive in history
• She accused 52-year-old of hiding away more than £400million offshore
• He said he lost cash in Moscow deal and jailed for failing to reveal fortune
• Russian gangsters may have helped stash money but did not give it back
• Valery Morozov believes same happened to Young and Boris Berezovsky
• 'He declared he had no money but in reality it was hidden. Young may have become a victim of such a gang', he said
• Morozov fears 'ring of death' surrounding Young may have increased to 7