One Ukrainian serviceman was killed, three others were injured over the past 24 hours in Donbas, said Ukrainian military spokesman Oleksandr Motuznyak.
"The enemy occasionally uses heavy weapons, mortars and 122-millimeter artillery. Enemy snipe [fire] also intensified again along the frontline," he said.
Pro-Russian separatists in Donetsk oblast, for their part, claim that Ukraine has violated the cease-fire regime 102 times over the past 24 hours, while separatists in Luhansk oblast say that Ukrainians have shelled them three times.