Russian-led forces have mounted four attacks on Ukrainian army positions in Donbas since Friday midnight.
"The armed forces of the Russian Federation and its mercenaries have violated the ceasefire four times since the beginning of the current day, October 11," the press center of Ukraine's Joint Forces Operation said in an evening update posted on Facebook.
The enemy opened fire from grenade launchers of various types, heavy machine guns, and small arms.
Under attack came Ukrainian positions near the villages of Talakivka, Novotroyitske, Slavne, and Vodiane.
According to the update, there have been no casualties among the Ukrainian military since Friday midnight.