Kyiv has said that new firings took place on the part of militants against positions of the Ukrainian army as militants used grenade launchers and heavy machine guns.

"We have recorded 56 violations of the ceasefire in the past 24 hours," Oleksandr Motuzianyk, the anti-terrorist operation spokesman for the Ukrainian presidential administration, told a briefing on Tuesday.

Militants "used heavy weapons in 9 episodes", he said.

Motuzianik remarked that a turbulent situation remains along the entire front line in Donetsk axis. In particular, militants in the northern outskirts of Horlivka and in Pisky used heavy weapons - the 82mm and 120mm mortars, he said. They fired several dozens of mortar shells over the 24 hours, he said.

The positions of the Ukrainian forces in Avdiyivka, the settlement of Luhanske, and the village of Dacha were fired on by snipers, he added. Near Avdiyivka, militants opened fire from the eastern and the southern direction, he said.

"The place of the most intense hostilities was outskirts of Horlivka (Zaitseve, Mayorsk and Novhorodske), where the enemy conducted a dense fire almost round o'clock," Motuzianyk said.

Ukrainian positions on the second defense line were also hit by enemy fire in the outskirts of Horlivka and Donetsk, he said.

Militants violated the silence regime several times in Maryinka, at the Mariupol axis, Motuzianyk revealed: "In particular, an enemy sniper conducted fire on our servicemen".

Also, a combat clash between militias and the Ukrainian troops started near the town of Khrchovyk to last 'about an hour', prompting the militiamen to "retreat eastward", he said.

However, Motuzianyk remarked that Monday was absolutely peaceful along the Luhansk axis.