"I have already requested the Russian foreign ministry to initiate the procedure to declare France a state sponsor of terrorism," Prigozhin was quoted as saying in a statement released by his company, Concord.Prigozhin said he opened a new package on Friday because he had thought it would contain his son's head."If Dmitry Sytyi remains alive, he will continue the struggle and see with his own eyes how those who made the attempt on his life will burn in the flames of history," Prigozhin added.France, the UN and others say they are mercenaries from the Kremlin-backed Wagner group, who have been linked with atrocities and looting of resources.Sanctioned by Washington and Brussels, Prigozhin has emerged as one of Putin's most loyal lieutenants after Moscow sent troops to Ukraine on February 24."