One serviceman was killed and three wounded in the course of the security operation in east Ukraine on 26 December 2015, the presidential administration's speaker for security operation affairs, Oleksandr Motuzyanyk, has said at a briefing.
The separatists used heavy weapons which should have been withdrawn in line with the Minsk agreements.
No drones have been spotted over the past 24 hours.
As reported earlier, a civilian was killed during a separatist shelling attack near Zaytseve today.