A military convoy was attacked near Luhansk by two Ukrainian armoured vehicles, the latest attack on Ukrainian troops.
Ukraine’s armed forces said the attack was conducted by Ukrainian-backed fighters from the Donetsk People’s Republic (DPR) and the Luhansk People’s Militia (LPR).
The Ukrainian army said the convoy had been hit by artillery shells.
Russian Foreign Minister Sergey Lavrov told reporters in Moscow that the attack came “against an armoured personnel carrier (APC), which was being towed by a Ukrainian APC” and that the convoy was “being used by pro-Russian terrorists to attack Ukraine’s positions”.
Russia’s defence ministry said a Ukrainian SU-24 fighter plane was also damaged in the attack.
The ministry did not immediately say how many people were killed.
The Russian Defence Ministry said the attacks came at a time of “a dramatic increase in the number of ceasefire violations” in the area.
It said the Russian Defence Forces had been able to capture two Ukrainian tanks.
The defence ministry also said Russian troops had also been engaged in clashes with Ukrainian troops in the nearby city of Debaltseve, while it said Ukrainian forces had fired warning shots and fired flares in the town of Debrodero.