A Ukrainian drone attack overnight sparked a fire at an oil depot in Russia's southern region of Krasnodar that has since been extinguished, regional officials said on Wednesday. A series of drone attacks by Ukraine on Russia's energy facilities have sparked fires in recent days at a major oil refinery in the Volgograd region,

It came as Russia and Ukraine swapped 150 prisoners of war each and UK foreign secretary David Lammy met with Ukrainian president Volodymyr Zelensky in Kyiv.

The fire at the Albashneft oil depot was extinguished at 8:11 am Moscow time, the independent Telegram channel Astra reported, publishing a video of what appears to be a burning oil tank.