Elsewhere in Russia's south, we're looking into reports that a railway station in the Volgograd region was attacked last night as well as overnight footage of damage from Ukraine's Odesa.

Ukrainian drone attacks sparked a massive fire at an oil depot in a rare attack on the Black Sea resort of Sochi.

More than 120 firefighters were trying to extinguish a blaze at an oil depot in the Russian city of Sochi that was sparked by a Ukrainian drone attack, regional Governor Veniamin Kondratyev said early on Sunday on the Telegram messaging app.