By Kieren Williams The body of Alexei Navalny is missing, his associates have claimed, fuelling claims that he was murdered by Russian authorities. The lawyer turned politician became Vladimir Putin’s main political threat and was apart of a fledgling pro-democracy movement in Russia before he was arrested. Thrown in a penal colony, many feared for Navalny’s safety before it was announced yesterday by Russian authorities that he had died. * This is a breaking news story. Follow us on Google News, Flipboard, Apple News, Twitter, Facebook or visit The Mirror homepage.