Ukrainian army positions in Donbas came under 25 attacks over the past day, the anti-terorist operation (ATO) press center said.The militants fired small arms, heavy machineguns, grenade launchers and mortars on Shyrokyne, Maryinka and Krasnohorivka in the Mariupol sector, the report said. Anti-aircraft systems fired on Novo-Oleksandrivka in the Luhansk sector, it said.In the Donetsk sector our positions near Avdiyivka were attacked by use of mortars and grenade launchers.