India, May 31 -- Ukrainian drone strikes caused fires at more Russian oil facilities overnight into Saturday, local Russian officials said, in what appeared to be the latest attack on Moscow's vital oil industry.

Authorities in Russia's Rostov region said falling drone debris sparked a fire that damaged an oil depot and tanker in the port of Taganrog, while officials in the neighbouring Krasnodar region reported a fire breaking out at an oil depot in Armavir for the same reason.

"Another facility of Russia's oil industry has been reached - Armavir," Ukrainian President Volodymyr Zelenskyy wrote on X Saturday of the attack in the Krasnodar region, noting that Armavir is "500 kilometres from our state border."

"We are rightfully bringing...