Russian-backed militants became more active after dark, the ATO HQ said in an update on Sunday morning.

In the Luhansk sector, the enemy repeatedly used 120mm mortars, anti-aircraft guns, cannons of infantry fighting vehicles and small arms against the defensive fortifications of the Armed Forces of Ukraine near the villages of Troyitske and Krymske.

Read alsoUkraine’s death toll in Donbas rises as ATO HQ reports 4 KIAs in past day"During acts of fire provocation near the villages of Luhanske and Popasna, the enemy attacked Ukrainian strongholds, using 82mm mortars and grenade launchers several times," the report said.

"Militants violated the truce near the village of Zaitseve, which was attacked by infantry fighting vehicles. They also used machine guns to fire at Ukrainian troops near the village of Novo-Oleksandrivka and near the town of Svitlodarsk," it said.

In the Donetsk sector, enemy activity focused on areas around the town of Avdiyivka. Here, the invaders used 82mm mortars to shell the defenders of Pisky and the Butivka mine, while infantry weapons were used to attack the southern outskirts of Avdiyivka. In addition, illegal armed units opened fire from grenade launchers and cannons of an infantry fighting at the defenders of the villages of Vodiane and Talakivka.

"In total, 39 violations of the ceasefire by the invaders were recorded in the past day. In cases when shelling of the enemy posed an immediate threat to the life and health of our soldiers, units of the Armed Forces of Ukraine responded to the enemy with fire from grenade launchers, machine guns and small arms," the ATO HQ said.

There were no casualties among the Ukrainian soldiers on Saturday, December 9.