Three police officers were killed and seven others injured in a shootout in Russia's volatile North Caucasus Republic of Daghestan.
Daghestan's Interior Ministry says that unknown armed individuals opened fire, possibly with machine guns, at a police patrol in Daghestan's central district of Gunib on May 15.
The territory is currently cordoned off by security forces.
Police are searching for the shooters in a forested area near the village of Sogratl.
Daghestan has been plagued by violence linked to Islamic extremism and organized crime for years, with scores of people being killed and injured.
Based on reporting by Interfax and ITAR-TASS