Photo from UNIAN

The European Union has again called on the Russian Federation to immediately free illegally imprisoned Ukrainian film director Oleh Sentsov, who has been on hunger strike in a Russian penal colony since May 14.

"At the OSCE Permanent Council, the EU calls on Russia to immediately and unconditionally release Ukrainian film director Oleg Sentsov, on hunger strike for more than 100 days in protest against incarceration of Ukrainian political prisoners by Russia," the Vienna-based EU Permanent Representation to the OSCE tweeted on August 30.

Read alsoUK's Minister for Europe calls for immediate release of Ukrainian political prisoners held by Russia

As UNIAN reported, Sentsov was arrested in Russian-occupied Crimea in spring 2014 and in August 2015 he was sentenced to 20 years in prison following an unfair trial where he faced "terrorism" charges stemming from his opposition to Russia's occupation of Crimea.

He has been serving his term in a penal colony in the town of Labytnangi, Russia's Yamal.

Sentsov's cousin, Moscow-based journalist Natalya Kaplan says his condition is critical and things are "catastrophically bad."