MOSCOW, March 24. /TASS/. Ukraine’s authorities are inviting foreign mercenaries to take part in the military operation in Donbass as part of Kiev forces, the official spokesman for militias of the self-proclaimed Lugansk People’s Republic said on Thursday.

On Wednesday, a foreign unit consisting of 70 people arrived in Stanitsa Luganskaya in eastern Ukraine, Andrei Marochko said.

"The military speak a foreign language with each other, wear a black uniform and their faces are covered with a mask. These could be fighters of one of foreign private military companies," he was quoted by the LuganskInformCenter as saying.

Kiev forces deployed 13 tanks and seven infantry fighting vehicles to the contact line near Stanitsa Luganskaya and carried out the rotation of a unit headquartered in the building of a local library, he said.

A commander of the Kievan Rus battalion, Yevgeny Lavrov, also said in an interview with a Ukrainian TV channel that three US and twelve Georgian servicemen have joined his forces, Marochko reminded.

The Lugansk people’s militias have stated many times that Kiev is deploying military equipment and personnel to the contact line in violation of the Minsk peace deal.