The militants conducted 33 attacks on Ukrainian army positions over the past day, including nine attacks by use of large-caliber weapons, the army operation press center has said.
"In disregard of the Minsk agreements, the militants fired 120mm mortars on Popasna and 82mm mortars on Ukrainian strongholds near Zaitseve and Maryinka," the press center wrote on Facebook on Thursday.
The gunfire was most intense in the Avdiyivka defense area, where the militants used mortars of both calibers in addition to various types of grenade launchers, machineguns and small arms against Ukrainian troops.
"Despite the serious impact on Maryinka, where the militants used their entire arsenal of weapons, including 82mm mortars, 14 times, the Ukrainian Armed Forces remained in control," the staff said.
The hostiles were also active in Shyrokyne, Vodyane, Berezove, Krasnohorivka, the Butivka mine, Schastia and Novozvanivka, the report said.
"In the reporting period, the Ukrainian Armed Forces opened fire 14 times when the threat of the enemy's advancement was the biggest," the press center said.