Russia has killed 11 armed militants linked to Isis.
Officers raided a reinforced base in a wooded area in the the North Caucasus and shot dead all the militants during an exchange of fire.
The fighters reportedly threw grenades when they came under attack.
The National Russian anti-terrorism committee claimed that the base had a stockpile of ammunition and weapons as well as a workshop for producing explosive devices.
“The armed group organised channels for residents of the republic to be sent to the territory of the Syrian Arabic Republic so that they could take part in activities by terrorist groups,” the committee said in a statement.