Members of the Right Sector movement have been holding a demonstration outside the Ukrainian parliament building.
The group gathered to vent their anger at the killing of prominent Right Sector member Oleksander Muzychko earlier in the week.
The protesters were reportedly chanting "Tribunal!" and demanding the resignation of the Interior Minister Arsen Avakov.
Muzychko was killed in unclear circumstances as police commandos were attempting to detain him.
Estimates of the crowd size range from several hundred to more than 1,000. (ITAR-TASS)
Russian TV is sure to have a field day with this Right Sector action outside parliament. Plays right into Putin's hands.— Christopher Miller (@ChristopherJM) March 27, 2014
Better look at crowd outside Rada chanting "Tribunal!" over recent police killing of Right Sector leader Muzychko pic.twitter.com/ne38h2ro9I— max seddon (@maxseddon) March 27, 2014