Ukrainian army positions in Donbas came under 54 attacks over the past day, the press center of the army operation staff said.Thirty-four provocations were observed in the Mariupol sector where Ukrainian army positions came under attack of large-caliber machineguns, grenade launchers and small arms. In particular 152mm tube artillery and 120mm mortars were used in Vodiane.The truce was breached 17 times in the Donetsk sector, the staff said. According to it, machineguns, grenade launchers and mortars of various calibers were fired on Ukrainian army positions, including 152mm artillery that was engaged in attacks in Avdiyivka.