KIEV, February 20. /TASS/. Ukraine's radical nationalist Right Sector group is now the only volunteer battalion active in the military operation zone in eastern Ukraine, and talks on making it part of Ukraine’s Armed Forces are underway, a spokesman for the Ukrainian General Staff said on Friday.

"Today there is only one volunteer unit - the Right Sector - left as part of military formations that are performing tasks in the east of the country," spokesman Vladislav Seleznev said.

In mid-November 2014, Russia’s Supreme Court declared the Right Sector an extremist organization and banned its activity in Russia. Russian investigators earlier said they had irrefutable evidence implicating members of the Right Sector group in mass killings of civilians in eastern Ukraine.

The Right Sector group played a leading role in the Maidan anti-government protests in downtown Kiev. The key figure in the movement, Dmytro Yarosh won a parliament seat in the October parliamentary election.

The organization's leader Dmytro Yarosh previously said that Right Sector doesn't recognize the peace agreements reached in Minsk and will continue combat actions in eastern Ukraine.