Alexei Navalny has been moved from jail to an unknown location, his lawyers have claimed.
The opposition leader, 44, was last reported to be in penal colony number 2 - known as IK-2 - east of Moscow, where torture-like conditions are so horrific inmates have severely injured themselves to avoid being sent there.
But a post shared to Mr Navalny s Twitter account on Friday said his lawyers don t know where the Kremlin critic is now after he was transported today.
They were banned from visiting him at a pre-trial detention centre in the morning, the tweet said.
At around 2pm, they were told that Mr Navalny had been moved, but authorities refused to divulge where to.
Jailed Russian opposition politician Alexei Navalny has been moved to penal colony number 2, known as IK-2, (pictured) in the town of Pokrov, near Moscow where conditions are like torture .
In conversations with The Moscow Times, former inmates of the jail where Navalny will serve his time spoke of psychological isolation and harsh conditions.