Two traffic police officers were killed by unknown attackers in Russia's volatile North Caucasus region of Daghestan on August 12.
The Investigative Committee's local branch says that the attackers shot the police officers dead and took away their firearms.
The incident took place near the western city of Izberbash.
On August 11, Daghestani police killed four suspected militants in Daghestan's western district of Botlikh.
Daghestan has been at the epicenter of a wave of violence by armed criminal groups and by militants seeking to establish an Islamic caliphate in the North Caucasus.
Organized crime, business turf wars, political disputes, and clan rivalry also contribute to the bloodshed in the region.
Based on reporting by RIA, TASS and Interfax