A sniper unit consists exclusively of persons of Chechen nationality.

Russia has sent a sniper unit made up of representatives of Chechen nationality to positions outside the Ukrainian-controlled strategic port city of Mariupol in Donetsk region.

"A sniper unit consisting of persons of Chechen nationality alone was seen to have arrived at the Russian occupation forces' front positions in the Mariupol sector," the Ukrainian Defense Ministry's Main Intelligence Directorate said.

As UNIAN reported earlier, Commander of the Russian-led forces in Donbas, eastern Ukraine, Aleksej Biryulin, was eliminated on December 6.