Russia's proxy forces have mounted four attacks on Ukrainian army positions in Donbas in the past 24 hours, with no Ukrainian soldiers reported as killed or wounded in action, the press center of the Anti-Terrorist Operation (ATO) headquarters has reported.

"Over the past day, the militants of the Russian-occupation troops continued their activity in the ATO area, in particular the militants continued using heavy mortars on the positions of Ukrainian defenders, blatantly violating the Minsk accords," the headquarters said on its Facebook page on Friday morning.

In the Luhansk sector, the enemy was active at the Svitlodarska Duha bulge. In the evening, the adversaries were shelling our positions near the village of Luhanske for more than two hours, using 120mm and 82mm mortars, cannons of infantry fighting vehicles and heavy machine guns. Moreover, the same types of weapons were used in the afternoon and in the evening to shell the Ukrainian fortified positions near the village of Troyitske.

"In total, the illegal armed formations lobbed over 50 shells of various calibers into our fortified positions. No Ukrainian servicemen were injured," ATO staff said.