STORY: It's now all but destroyed.

Svitlana tried to salvage whatever she could from the ruins.

Nearby, firefighters and rescue workers dug through the rubble of a destroyed school as they searching for people possibly trapped inside.

The number of casualties was unknown.

Russia, which invaded Ukraine on February 24, has denied deliberately targeting civilians.

Ukrainian officials have said they expect Kramatorsk, a city of more than 150,000 people before the Russian invasion, to become one of the main focuses of Russia's offensive in eastern Ukraine.