Ukrainian servicemen detained a Russian fighter in the ATO zone / Photo from UNIAN

"A member of the Russian occupation forces was detained near Ukrainian army positions in the Mariupol sector on January 18, 2017," the press center of the Anti-Terrorist Operation (ATO) headquarters said on Wednesday.

Read alsoDef. Ministry: No casualties in last day, but shelling continues in Mariupol sector"It was established during an ID check that the man is a citizen of the Russian Federation, registered in the town of Kurganinsk, Krasnodar Krai. He also had documents that prove he is a member of an illegal armed formation of the self-proclaimed Donetsk People's Republic," the ATO HQ said.

The ATO HQ earlier reported about 30 militant attacks on Ukrainian positions from 00:00 to 18:00 local time on Wednesday, January 18.

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Read alsoRussian proxies attack Ukraine 61 times in last day amid escalationThe village of Talakivka in the Mariupol sector came under mortar fire. Russia's hybrid military forces also used grenade launchers and small arms to shell the villages of Slavne, Pavlopil, Hnutove, Talakivka, Novotroyitske, Shyrokyne, and Vodiane. Further, Novotroyitske was under sniper fire.

Two Ukrainian soldiers were wounded in action over the period under review.