Russian-led forces mounted two attacks on Ukrainian troops in Donbas, eastern Ukraine, on the first day of the New Year truce, starting midnight December 29.

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"Ukrainian strongpoints were fired upon from grenade launchers of various types near the village of Zalizne in the Horlivka direction and in the area of Hnutove in the Mariupol direction," the press center of Ukraine's Joint Forces Operation (JFO) said in an update on Facebook as of 18:00 Kyiv time on Saturday.

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It is noted that to suppress enemy provocations, the defending units returned fire.

No Ukrainian army casualties have been reported since the start of the day.

The situation in the zone of the Joint Forces Operation remains under control of Ukrainian troops.

As UNIAN reported earlier, on December 27, Ukraine's envoy to the Trilateral Contact Group (TCG) at the Minsk talks on Donbas Yevgenij Marchuk said the parties to the armed conflict in the east of Ukraine agreed on an indefinite truce starting midnight December 29. However, the militants opened fire on the first day of the ceasefire.