Russia's hybrid military forces on June 12 mounted 12 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 12 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 June 13. "As a result, one Ukrainian serviceman was wounded in enemy shelling."

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

Under attack came Ukrainian positions near the towns of Maryinka and Avdiyivka, and the villages of Shyrokyne, Verkhniotoretske, Vodiane, Luhanske, and Krymske.

Joint Forces returned fire to each enemy attack.

According to intelligence data, two members of Russia-led forces were killed and at least another three were wounded in action on June 12.

"Since Saturday midnight, Russia-led forces have attacked Ukrainian positions twice near the village Slavne in the Skhid (East) sector, using hand-held anti-tank grenade launchers and small arms," the update said.

Enemy troops have also engaged Ukrainian positions near the village of Luhanske in the Pivnich (North) sector, employing proscribed 122mm artillery systems, the report said.

There have been no Ukrainian army casualties since Saturday midnight.