Ukrainian servicewoman and parliamentarian Nadia Savchenko, who was sentenced to 22 years in jail for killing Russian journalists, said that she could stand a thirst strike at least four days, lawyer Ilya Novikov said.

"The symptoms of dehydration already noticed, her skin is dry, tongue and gums are white. There is a 24-hour video surveillance in the prison cell. In order not to give some media grounds for speculations to, she doesn't use shower any more and doesn't come up to a wash stand. According to her, she will stand at least four days," Novikov wrote on his Facebook account.

The lawyer also reported that for the last time she passed analyses was on April 5, before a thirst strike began.

Savchenko also wrote a letter of refusal to pass her medical data to Russian Foreign Ministry, having permitted to provide them just to her lawyers and Ukrainian consuls.

Novikov said that chief of the detention facility threatened to feed Savchenko by force.

As reported, sentence to Savchenko went into effect on April 5. The next day, Savchenko began a thirst hunger strike, demanding an immediate return to her homeland.