The attacks traditionally concentrated on Donetsk and Artemivsk in Donetsk region, as well as southeastern Ukrainian seaport Mariupol, army operation press centre reported. The militants keep using mortars, grenade launchers, and small arms. One Ukrainian serviceman has been killed and five more injured in the area in the past day, Presidential Administration spokesman for army operation Andriy Lysenko said at a press briefing in Kyiv on Friday. "Our combat reconnaissance patrol vehicle hit a mine near Hnutove [on Thursday]. As a result, one serviceman was killed and another five suffered injuries," he said.