Lawyer Mark Feygin, plans together with his British colleague, Ben Emmerson, to lodge a complaint with the European Court of Human Rights (ECHR) over the case of Ukrainian pilot Nadia Savchenko.

"I also want to say that I am holding talks with my British colleague, Ben Emmerson, to jointly file a complaint with the ECHR over the Savchenko case," the lawyer wrote on his Twitter microblog.

Savchenko has been held in Russian custody since July 2014 after being kidnapped by Russia-backed separatists and illegally taken across the Ukrainian border.

On March 22, 2016, the Donetsk Court of the Rostov region found Savchenko guilty of killing Russian journalists Igor Kornelyuk, and Anton Voloshin, by a group of people by a previous concert on hatred and enmity motives, and sentenced her to 22 years in a penal colony. The court also found her guilty of attempted murder and illegally crossing the Russian border.

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

Savchenko decided to stop her hunger strike after a phone conversation with Ukrainian President Petro Poroshenko.