Five people were killed by an unidentified gunman in a village in the east of Russia's Moscow region, the RIA Novosti news agency reported Sunday, quoting a local emergencies service source.

The gunman, about 30 years old and armed with a Saiga hunting carbine, attacked a group of bikers, RIA Novosti said without specifying when the shooting took place.

Local authorities have issued a search warrant for the attacker, and the regional investigation department has launched a criminal probe into the case.