Three containers are still ablaze at an oil depot outside Kyiv, said head of the Ukrainian Emergency Situations Service's Main Department Valeriy Borys.

One container filled with oil and two with fuel belong to the oil depot of the BRSM-Nafta chain of filling stations located in the village of Kryachky.

"Firefighters continue tackling minor fires, but cannot approach the containers where temperatures are too high. Only three containers remain in flames - one filled with oil and two with fuel. All other containers have been destroyed," he told reporters at the scene.

Three lost rescue workers remain unaccounted for, Borys said.