Photo from facebook.com/Batkivshchyna

"I have just come from Nadia. Tomorrow she will be sent to Moscow’s 20th city hospital," Feygin tweeted.

As UNIAN reported earlier, Savchenko was abducted by Russian-backed militants in the Donbas in the summer of 2014, and then taken to Russia, where she was charged with being involved in the death of Russian journalists. She was also charged with illegally crossing into Russia.

On October 26, during the early parliamentary elections in Ukraine, Savchenko was elected as an MP from the Batkivshyna Party. The Verkhovna Rada made Savchenko a member of the Ukrainian delegation to the Parliamentary Assembly of the Council of Europe.

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The Rada has called on international organizations and inter-parliamentary assemblies to make efforts to free Savchenko.

Savchenko went on hunger strike on December 15 in protest at being denied medicines she required. She is now demanding that she be released from jail and placed in another form of detention pending her trial. In early March, her state of health deteriorated.

On April 24 the Russian Investigative Committee brought final charges against Savchenko.

In addition to the charges of being involved in the murder of two Russian journalists in eastern Ukraine last June, Savchenko was accused of illegally crossing the Russian border.

According to Russia’s Federal Penitentiary Service, Savchenko has tightened her hunger strike.

"For the last three days Nadia Savchenko has refused to eat. Therefore, a medical consultation will be held today," said Kristina Belousova, a representative of the service.

As reported earlier, Chairman of the Russian Human Rights Council Mikhail Fedotov told reporters that Savchenko had resumed her hunger strike and could be sent to hospital due to her deteriorating health: Savchenko has lost more than eight kilos in weight in the last week.