Photo from Ukraine's Joint Forces Operation

Russia's hybrid military forces on May 16 mounted six attacks on Ukrainian positions in Donbas, eastern Ukraine.

Read alsoUkrainian troops destroy enemy firing position in Donbas (Video)

"The Russian Federation's armed groups violated the ceasefire six times in the past day," the press center of Ukraine's Joint Forces Operation said in a Facebook update as of 08:00 Kyiv time on May 17, 2020.

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Russia-led forces opened fire from proscribed 120mm mortars, grenade launchers of various types, heavy machine guns, and small arms.

Under attack came Ukrainian positions near the town of Avdiyivka, and the villages of Novotroyitske, Hranitne, and Lebedynske.

Joint Forces returned fire to each enemy shelling. According to intelligence data, one members of Russia-led forces was wounded.

"From Sunday midnight, Russia-led forces attacked Ukrainian positions twice near the town of Avdiyivka, using 82mm mortars, grenade launchers of various types, and small arms. One Ukrainian soldier has been wounded as a result of enemy shelling since day-start on Sunday," the update said.