At least 44 people have been wounded in fighting in Ukraine’s second-largest city of Kharkiv, and seven of them died in hospitals, Ukrainian authorities said.

It was not clear if the casualties, which covered the past 24 hours, were all civilians.

The state emergencies agency said the casualties could be higher because the damage from Monday’s shelling of residential areas is still being assessed.

Ukraine Invasion
Ukrainian soldiers handle equipment from a damaged military vehicle after fighting in Kharkiv, (Marienko Andrew/AP)

Ukrainian social networks featured videos showing residential quarters hit by a series of powerful explosions amid fighting with Russian forces.

The Russian military has consistently denied targeting residential areas despite abundant evidence of shelling of residential buildings, schools and hospitals.