Russia's hybrid military forces on May 29 mounted 13 attacks on Ukrainian army positions in Donbas, eastern Ukraine, with one Ukrainian soldier reported as wounded in action.

"The Russian Federation's armed formations violated the ceasefire 13 times in the past day," the press center of Ukraine's Joint Forces Operation Headquarters said on Facebook in an update as of 07:00 Kyiv time on May 30. "As a result, one Ukrainian serviceman was wounded in enemy shelling."

Russian-led forces opened fire from proscribed 120mm and 82mm mortars, grenade launchers of various types, heavy machine guns, and small arms.

Read alsoTCG to discuss lists for prisoner swap at next Minsk talks – Ukraine President's Office

Under attack were Ukrainian positions near the town of Avdiyivka, and the villages of Bohdanivka, Nevelske, Berezove, Novotroyitske, Lebedynske, Starohnativka, Luhanske, Hladosove, Novhorodske, and Krymske.

The Joint Forces returned fire in response to each enemy attack. According to intelligence data, one member of Russia-led forces was wounded on May 29.

In addition, the enemy shelled disengagement site No. 2 Zolote in the evening, using tripod-mounted man-portable antitank guns.

"Since Saturday midnight, Russia-led forces have attacked Ukrainian positions near Avdiyivka, using grenade launchers of various types and heavy machine guns," the update said.

There have been no Ukrainian army casualties since Saturday midnight.