The combined Russian-separatist forces attacked Ukrainian army positions in eastern Ukraine 37 times overnight, the press center of the Anti-Terrorist Operation wrote on Facebook early Monday.
"The militants opened fire in all directions along the demarcation line, mainly in the Donetsk sector. They fired rocket-propelled grenades, heavy machine guns and small arms in the direction of the towns of Maryinka and Avdiyivka, as well as the on villages of Opytne, Pisky, Nevelske and Novhorodske," the report says.
In addition, the mercenaries fired on the town of Maiorsk, the villages of Zaitseve, Stanytsia Luhanska, Hranitne and Shyrokyne using mortars, infantry fighting vehicles, grenade launchers and small arms.