Firefighters battle blaze in western Ukraine Ternopil following Russian air strikes

More than 90 firefighters were involved in efforts to extinguish a huge fire in western Ukraine that came amid overnight Russian air strikes, a regional official said on Thursday.

Burning fuel and lubricant materials had raised chlorine levels in the air, a deputy head of the Ternopil regional administration, Viktor Ustenko, said. Authorities urged people to stay indoors.

An industrial facility was attacked in the western region during the latest Russian bombardments, and a fuel reservoir was hit, officials said.

More than 90 firefighters were involved in efforts to extinguish the fire, Ustenko added. "The situation is fully under control," he said.