REUTERS

"About twenty airstrikes have been launched," said Russian Defense Ministry spokesperson Major-General Igor Konashenkov.

According to the report, Russian aircraft launched targeted strikes on eight positions of the Islamic state terrorist group.

Read alsoRussian airstrike in Syria targeted CIA-backed rebels, U.S. officials say"The airstrikes blew up ammunition depots, weapons, fuel and lubricants, stockpiles of military equipment. Command control posts of ISIS militants in the mountainous area were completely destroyed," Konashenkov added.

As UNIAN reported earlier, U.S. Secretary of State John Kerry stated that Washington would be "extremely concerned" if Russia launched air strikes in areas where there were no ISIS forces.