Russia's hybrid military forces on January 28 mounted 12 attacks on Ukrainian army positions in Donbas, eastern Ukraine, with two Ukrainian soldiers reported as injured.

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"The armed forces of the Russian Federation violated the ceasefire 12 times on January 28," the press center of the Joint Forces Operation Headquarters said on Facebook in a morning update on January 29.

The enemy opened fire from proscribed 120mm and 82mm mortars, grenade launchers of various types, heavy machine guns, and small arms.

Under attack were Ukrainian positions near the villages of Lebedynske, Berezove, Vasylivka, Novoluhanske, Orikhove, Novotoshkivske, and Troyitske.

"Two members of the Joint Forces were injured in a booby-trap blast on January 28," it said.

There have been no violations of the ceasefire since Wednesday midnight.