The Ukrainian Ministry of Foreign Affairs has condemned the prolongation of arrest of Ukrainian citizen Pavlo Hryb, illegally detained in the pre-trial detention center in Krasnodar, for two months, press secretary of the authority Mariana Betsa has reported.

"We strongly condemn the "decision" of the Russian court and demand the release of political prisoner Pavlo Hryb. We also demand the admission of Ukrainian doctors [to him]," she wrote on Twitter.

As reported, the Russian court extended the arrest of Pavlo Hryb, illegally detained in the pre-trial detention center in Krasnodar, for two months, Pavlo's father Ihor Hryb said.

"According to Ihor Hryb, the court session was held behind closed doors on Saturday, April 28," the report reads.