Oleksandr Muzychko, also known as Sashko Bilyi, the coordinator of the Right Sector ultra-nationalistic group in western Ukraine, was killed in the city of Rivne last night, parliamentarian Oleksandr Doniy said on his Facebook page, KyivPost reports.

The special operation was carried out on orders and under direct control of the head of the Ukrainian intelligence, Valentin Nalivaichenko, a former senior Ukrainian intelligence official told RIA Novosti

On March 7, the Russian Investigative Committee opened a criminal inquiry against Muzychko, who was suspected of involvement in acts of banditry targeting Russian federal forces in Chechnya in the 1990s.

Committee spokesman Vladimir Markin told Interfax that Muzychko was accused of "killing at least 20 soldiers of federal forces held in captivity."