A number of civilians are sheltering from Russian shelling under a chemical plant in the Ukrainian city of Sievierodonetsk and authorities fear it may still have stocks of dangerous materials, the regional governor told Reuters on Wednesday.
Russian forces entered the city, the largest still held by Ukraine in the eastern Luhansk region, late last week after weeks of shelling as they try to take full control of the industrial Donbas region.
Ukraine on Tuesday said a Russian air strike hit a nitric acid tank in Sievierodonetsk, releasing a large pink cloud.