Ryazan

Video footage verified by the BBC shows a fireball rising over the refinery and pumping station in the Ryazan region, southeast of Moscow, which Ukrainian officials said was a target.

Russia said it had shot down 121 drones that had targeted 13 regions, including Ryazan and Moscow, but reported no damage.

Andriy Kovalenko, head of Ukraine's centre for countering disinformation, said on Telegram that an oil refinery in Ryazan had been hit, as well as the Kremniy plant in Bryansk.

Bloggers on the social media site Telegram posted images and videos of fires raging in Ryazan.

It claimed to have destroyed 121 Ukrainian drones, including six over the Moscow region, 20 in the Ryazan region, and a number over the border region of Bryansk.