Riot police and protesters clash in Yerevan, Armenia

There have been clashes between riot police and anti-government protesters in the Armenian capital, Yerevan.

Police launched stun grenades into the crowds in an attempt to disperse demonstrators who had turned out to support an armed group which has been barricaded inside a police station for two weeks.

The group are demanding the release of "political prisoners", and remain inside the police station, where they are still holding a number of hostages.