Ukrainian officials have removed tens of thousands of residents after a fire and ammunition explosions at a military base.
The Interior Ministry said on Wednesday that firefighters were still putting out the blaze which broke out in the town of Kalynivka, 120 miles (190km) southwest of the capital, Kiev, late on Tuesday.
Authorities bussed more than 30,000 people out of the area and turned off the electricity and gas supply.
Four residential buildings were damaged by the fire but no casualties were reported.
Prime minister Volodymyr Groysman, who arrived in the area early on Wednesday, said on local television the situation was under control. The cause of the fire was under investigation.