Three Ukrainian servicemen have been killed in the anti-terrorist operation zone in eastern Ukraine, and many of them have been injured in the past 24 hours, the Ukrainian presidential spokesman, Andriy Lysenko, said.

"In the past 24 hours, three Ukrainian servicemen have been killed, and eight more of our soldiers have been injured. These incidents happened in the Donetsk and Mariupol sectors," Lysenko said at a briefing in Kyiv on Monday.