The rebels' command today reported scores of mortar and tank firings by government forces.
Eduard Basurin, spokesman for the rebel military command in Donetsk, did not report any casualties.
A sharp escalation in fighting over the past week has killed at least 33 people, centering on Avdiivka, a government-held town just north of rebel-controlled Donetsk.
Nearly 180 homes or apartments in the town of 35,000 people were damaged in the shelling, according to Pavlo Zhebrivsky, a government official in the Donetsk region.