The sister of Ukrainian film director Oleh Sentsov, who has been convicted in Russia to 20 years in prison, Natalia Kaplan (Kochneva), has said that her brother is held in detention center No. 1 in Yakutsk, Russia.

"Initially we learned by word of mouth that Oleh was in Yakutsk. Together with human rights defenders we began to call detention centers, and one of them - detention center No. 1 - confirmed that he was there. It is clear that he will be transferred somewhere else, as he is sentenced to go to a [penal] colony. But we don't know to which colony. There are two high security prisons in Yakutia. We don't know where exactly he will go. One of them is intended for first time offenders, the other for repeated offenders," she told the Radio Liberty's project Crimea.Realities (http://ua.krymr.com/) on Tuesday.

Earlier, Russian human rights activists said they didn't know where Sentsov was taken to after his latest transfer to a detention center in Chelyabinsk. There was no official information about the final point of destination for the Ukrainian filmmaker.

Sentsov's defense lawyer Dmitry Dinze told the publication that such information is usually classified.

On August 25, 2015, the North Caucasus District Military Court in Rostov-on-Don issued a guilty verdict against Sentsov to a cumulative term of 20 years in a high-security prison for the alleged "preparation of terror attacks in Crimea".

On March 10, the Ukrainian Justice Ministry said it sent a request to the Russian counterparts asking them to hand over Ukrainians Oleh Sentsov, Hennadiy Afanasyev, Oleksandr Kolchenko, and Yuriy Soloshenko, convicted by Russian courts to Ukraine under the Convention on the Transfer of Sentenced Persons.

The Russian Justice Ministry said it will respond to Ukraine's inquiry on within a month's time.