Russian shelling set a central market ablaze in Ukraine’s eastern city of Slovyansk, killing two people and injuring seven, a top official said.
“I call on everyone: evacuate!” Donetsk governor Pavlo Kyrylenko tweeted.
Mayor Vadym Lyakh said Slovyansk was being hit by Russian artillery salvoes from closer positions, as it became a frontline city.
He posted photos of the blaze on Facebook, describing massive shelling, and urging people to stay in shelters.
Russia is seeking to control all of the eastern industrial Donbas area.
The area comprises the regions of Luhansk and Donetsk, and President Vladimir Putin claims it to be part of Russia.