"The Russian occupation forces continue shelling the positions of the ATO forces and disrupt the agreements of the Trilateral Contact Group on the ceasefire during the New Year and Christmas holidays," the ATO HQ said on Facebook in an update on January 3.

Read alsoDonbas war update: First day of 2018 doesn't bring peace"In the past day, all enemy fire activity was registered in the Donetsk sector," it said.

Militants near the town of Avdiyivka used large-caliber machine guns and small arms.

They used 82mm mortars and infantry weapons to fire at Ukrainian soldiers near the village of Verkhniotoretske.

Ukrainian positions outside the village of Hnutove in the Mariupol sector came under fire from 82mm mortars, cannons of infantry fighting vehicles, grenade launchers, machine guns, and small arms.

In addition, the enemy resorted to the entire range of infantry weapons to attack the defensive fortifications of the ATO forces around the village of Vodiane several times.

In total, there were six attacks on the Ukrainian army in the past day.