A Russian oil refinery in the southern Volgograd region caught fire after being hit by debris from a Ukrainian drone attack. Regional Governor Andrei Bocharov confirmed the overnight attack, saying on Friday that the blaze was “promptly extinguished” and one injured worker was hospitalised.

Ukraine said on Wednesday it had struck a big Russian oil refinery in an overnight drone attack, and a Russian official said an attempted Ukrainian drone strike on a nuclear power plant had been thwarted.