Russian President Vladimir Putin was informed of the death of Alexey Navalny. Navalny was serving a 19-year sentence in a special colony for creating an extremist community.

He felt unwell and lost consciousness, according to the Federal Penitentiary Service. The convict died in a colony in the Yamal-Nenets Autonomous Okrug, where he had been serving a sentence for terrorism and extremism. The cause of Navalny’s death is not yet known, but medical workers should find out the causes.