An active member of a criminal armed group was eliminated in a sweep operation in Argun early on Sunday, Chechen Interior Ministry spokesman Magomed Deniyev told Interfax. \"The militant had been on the federal wanted list on suspicion of committing serious crimes. He was eliminated in an exchange of fire after he offered resistance. He had a grenade which he failed to set off,\" Deniyev said. Firearms and ammunition were seized at the scene. None of the law enforcement officers, involved in the operation, was injured. Deniyev also said that unidentified men fired three shots with a shoulder-held grenade launcher at the premises of a police department in the Shelkovskoi district. None of the police officers was hurt. An operation was launched to track down the assailants. In other developments, three former militants have surrendered to law enforcement services. One of them, a resident of the village of Assinovskaya, told the police that he had been a member of the Khachukayev criminal armed group and that he had surrendered his Kalashnikov assault rifle after he quit the illegal armed group. Another militant, who had previously collaborated with the Dadayev criminal armed group, surrendered in the Ashatoi district. The evidence provided by the ex-militants is being checked. (Interfax)