Ukrainian political prisoner, film director Oleh Sentsov, continues his hunger strike in a Russian colony, and he almost does not get up, his sister Natalia Kaplan has said.

"Everything is not just bad, everything is disastrously bad. Oleg sent me a letter through his lawyer, he almost does not get up. He wrote that the end is close, and he does not mean his release," Kaplan wrote on her page on Facebook on Wednesday.

She also noted that Sentsov does not receive any letters.

"He says that he is now in an information vacuum and does not know what is going on at all," the sister said.

She added that the European Court of Human Rights insists on Sentsov's transfer to a civilian hospital, closer to the place of his residence.

"Oleh refused. He says that he simply would not survive transportation, and in a civilian hospital in Labytnangi, where he had already been taken to intensive care, he is mocked even more than in a prison hospital," Kaplan said.

Sentsov was arrested in Crimea in 2014 on terror charges. In August 2015, the North Caucasus District Military Court in Rostov-on-Don found him guilty of forming a terror group in Crimea and sentenced him to 20 years of imprisonment at a high-security facility.

On May 14, 2018 he announced a hunger strike and demanded the release of all Ukrainian prisoners in Russia.