"Over the last day, we haven’t lost any Ukrainian soldiers, but one was injured as a result of military clashes," Lysenko said.

As reported earlier, Russian-backed militants fired on the positions of the Ukrainian armed forces eight times from 2000 on Thursday to 0800 on Friday.

A ceasefire was declared again in the Donbas conflict zone on February 12, but like the previous three it has never been fully observed, and only resulted in a decrease in the fighting.

According to the Ukrainian government, Russian-backed militants have gained control of another 200 square kilometers of Ukrainian territory since February 12, when the latest ceasefire was supposed to have come into effect.