Ukrainian army positions came under 34 attacks in the Donbas operation zone in the past 24 hours, the press service of the Anti-Terrorist Operation (ATO) headquarters said.Five attacks on Ukrainian army positions were seen in the Luhansk sector: Small arms and grenade launchers were fired on Stanytsia Luhanska and Novo-Oleksandrivka, while 122mm tube artillery bombarded the vicinity of Bohuslavske, the report said.Most shelling incidents, 24, were observed in the Mariupol sector, the report said.In the Donetsk sector, the vicinity of Avdiyivka came under five attacks by use of machine guns, grenade launchers and mortars of both calibers, the press service said.