Russia-led forces have violated the Easter ceasefire in Donbas, eastern Ukraine, four times since Thursday midnight.
"Despite the announced Easter ceasefire, the enemy has violated the truce four times, using proscribed weapons, 82mm mortars, in one instance," the press center of the Joint Forces Operation said in an evening update on Facebook on April 18.
Read alsoOSCE again spots clusters of heavy weapons in Russia-occupied areas of Donbas
"Armed formations of the Russian Federation also opened fire from grenade launchers of various systems and large-caliber machine guns to attack our positions," the update said.
Ukrainian positions near the village of Pavlopil in the Skhid (East) sector came under 82mm mortar fire twice, while anti-tank grenade launchers were used near the village of Pisky.
In the Pivnich (North) sector, the enemy mounted two attacks on Ukrainian positions, using anti-tank grenade launchers and large-caliber machine guns near the town of Svitlodarsk. Anti-tank grenade launchers were used to shell Ukrainian troops near the village of Krymske.
One Ukrainian soldier was wounded in action on April 18.
Ukraine's Joint Forces fired back, information about the enemy's losses is being verified, the update said.
The situation in Donbas is under control, it added.
