One Ukrainian serviceman has been killed in the anti-terrorist operation area in the south-east of Ukraine over the past 24 hours, ATO headquarters spokesman Andriy Lysenko told a press briefing in Kyiv on Wednesday.

"One of our soldiers has been killed and another two have been injured in the past 24 hours," he said.

"The situation remains unstable and armed provocations continue in the area of the anti-terrorist operation. The adversary has been actively using small arms, grenade launchers and mortars. It has fired tanks twice against Ukrainian armed forces' positions near the village of Peski," Lysenko said.

No cannon artillery fire has been registered in the past 24 hours, he said.

The region's flashpoints are the villages of Shyrokyne and Chermalyk near Mariupol, the Donetsk airport and villages along the Bakhmutka road in the Luhansk region, Lysenko said.

The militia's drones have been seen flying over the south-east of Ukraine 22 times, he said. One of them was shot down by the Ukrainian army.