Vladimir Kara-Mourza, sentenced to 25 years in prison, wrote that he had been placed in solitary confinement for at least four months. His relatives and several Western chancelleries became concerned about his situation.

He was found guilty of spreading "false information" about the Russian military and having links to an "undesirable organization" British Foreign Minister David Cameron on Monday called on Russia to “urgently” provide information on the opponent's whereabouts, adding that he planned to meet his wife “soon”