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"At night, the militants used tank shells, cannon artillery systems, 120 mm mortars against the defenders of Avdiyivka's industrial zone – this is not to mention rocket-propelled grenades, heavy machine guns and small arms," he wrote on Facebook on Monday, May 16.

Read alsoRussian proxies attack ATO forces 36 times in last dayThe enemy has resorted to the use of a "serious caliber," he said.

"The ceasefire agreed for Orthodox Easter and May holidays is over," he added.