Imprisoned Russian opposition activist Vladimir Kara-Murza was transferred to a maximum security prison in Siberia and placed in a tiny “punishment cell,” his lawyer Vadim Prokhorov said Sunday in a Facebook post. According to Prokhorov, Kara-Murza was moved to IK-6, a maximum-security penal colony in Omsk.

The post shares information from a letter penned by Kaza-Murza detailing his transfer to Omsk, which he recalls to have taken less than three weeks total. Kaza-Murza expressed feeling tired from the transfer, but notes that he now has time to rest and reflect in silence. Prior to being transferred, Kara-Murza was being held in a pre-trial detention center in Moscow.

In April 2023, Kara-Murza was sentenced to 25 years in prison on charges of treason, dissemination of false information and affiliation with an “undesirable organization.” Kara-Murza was an active member of the People’s Freedom Party (PARNAS), a prominent Russian opposition party. About a month after Kara-Murza’s arrest, the Supreme Court of Russia ordered the liquidation of PARNAS, in accordance with a request from the Russian justice ministry.

Following his arrest earlier this year, foreign governments and international human rights entities have been vocal and active supporters of Kara-Murza. For example, in June 2023, the Canadian parliament granted honorary citizenship to Kara-Murza in order to increase the chances of his safe release. In July 2023, an independent UN human rights expert appealed for Russia to immediately release Kara-Murza. The European Union and United States both released statements labeling the conviction as “politically motivated” and condemning the sentencing.