Russian special operations forces troops are occupying territory in Donetsk and Luhansk for training and testing grounds. “Russian special forces with technical intelligence means and sniper rifles, including those of an unknown type, arrived in the units of the 1st (Donetsk) and 2nd (Luhansk) Army Corps of the Russian armed forces last week,” announced the Ministry of Defense of Ukraine. It is unclear how long they plan to use the area for preparation and training.
Source: https://www.unian.info