Eight Ukrainian troops have been injured in the anti-terrorist operation zone (ATO) in Donbas over the past 24 hours, Oleksandr Motuzianik, a spokesman for the ATO in the presidential administration, said on Sunday.

"None of our soldiers was killed but eight were injured in hostilities in the past 24 hours," he said at a briefing in Kyiv.

Despite a decrease in shelling and provocations in Luhansk region, the situation in the ATO zone remains complicated, he said.

In Luhansk region, the enemy fired grenades and mortars against the Ukrainian positions near Stanytsia Luhanska, Motuzianik said. Militants also shelled the Ukrainian positions near the villages of Orikhove and Zolote. Near Krymske, militants fired small arms.

In Donetsk region, militants fired 152-millimeter artillery weapons against the Ukrainian positions near the village of Kurdiumivka beside the Siversky Donets-Donbas Canal, the spokesman said.

The heavy weaponry banned by the Minsk agreements was used by the enemy against the Ukrainian defense positions near the village of Semyhiria, the spokesman said.

"The situation remains tense near Donetsk in the Horlivka area," the Ukrainian president's spokesperson said. Militants spent the whole day firing mortars, grenades and small arms against the Ukrainian positions in the western suburbs of Horlivka, he said.

Near Donetsk Airport, militias carried out an hour-long attack with large-caliber machineguns and tank shells against the Ukrainian positions near Opytne, Motuzianik also said. The enemy also fired 82- and 120-millimeter mortars several times against the Ukrainian positions near Opytne, he said. The Ukrainian positions near Avdiyivka and Pisky also came under mortar fire.

Near Mariupol, hostilities resumed after a relative lull of the past few days, the spokesman said. On Sunday morning, the enemy fired tank shells against the Ukrainian positions near Volnovakha.

Also, on Saturday morning a sniper shelled the Ukrainian positions near Shyrokyne, and late on Saturday night militants fired their antiaircraft weapons and large-caliber machineguns, Motuzianik said.

Also, grenades and small arms were fired at the Ukrainian positions near the village of Chermalyk in Volnovakha district throughout the day on Sunday, he said.