A supporter of Armenia's nationalist Tsegakron party wounded several police officers in an incident in front of a court building in Yerevan.
The incident took place on June 12 as the trial of Tsegakron party leader Shant Harutiunian was getting under way.
The man -- identified by police as 31-year-old Haik Biuregian -- climbed on the top a parked car, shouted that there was a bomb, and opened fire at police with an air pistol.
Police detained Biuregian at the scene, while several wounded police officers were taken to hospital.
Harutiunian was arrested in November after party activists clashed with police in Yerevan while trying to march to the presidential office building. Dozens were injured, including four police.
Harutiunian has been charged with violence against law enforcement officers and faces up to 10 years in jail. He says his arrest is politically motivated.