Moscow: The Islamic State group has claimed responsibility for a shooting at an ancient citadel in Russia`s volatile North Caucasus region of Dagestan that killed one and injured 11, the SITE Intelligence Group said.


"With the help of Allah, the warriors of the Khalifate were able to attack a group of Russian special service officers in the city of Derbent in southern Dagestan, killing one officer and injuring the others," the jihadist monitoring organisation SITE quoted IS as saying several hours after Wednesday`s deadly attack.