The billionaire died in London in February 2008 , under unclear circumstances .
Allegations were raised that he had been victim of a murder plot between Gudavadze and the tycoon Boris Berezovsky , a former partner of Patarkatsishvili .
The billionaire died in London in February 2008 , under unclear circumstances , and allegations were raised that he had been victim of a murder plot between Gudavadze and the tycoon Boris Berezovsky , a former partner of Patarkatsishvili .