Armenian health officials say 73 people needed medical treatment after clashes between riot police and supporters of gunmen from an opposition group who have been barricaded inside a police station in the capital for nearly two weeks.

The Health Ministry say 26 of the injured remained hospitalized Saturday, including six police officers.

Investigators say 23 opposition supporters have been detained following the unrest.

The clashes broke out late Friday when several hundred people tried to approach the Yerevan police station, which is cordoned off by security forces and where there have been periodic exchanges of fire.

The station was seized on July 17 by about 30 gunmen, who killed one policeman and wounded several others in the attack. They are demanding freedom for an opposition figure arrested in June.