The whereabouts of Russian opposition figure Alexey Navalny are unknown after he was removed from a detention center. Navalny is serving a sentence for fraud charges that he says are politically motivated. Deutsche Welle reports that a post on Alexei Navalny’s Twitter account on Friday said he had been moved from a jail in Russia’s Vladimir region and his whereabouts were not initially known. The news came as dozens of countries called on Russia to release Navalny, saying his imprisonment was unlawful and demanding an investigation into his poisoning last year. They also called for hundreds of people arrested since protests against Navalny’s detention¬†earlier this year to be freed.