Ukraine's drone attack on Russia's Krasnodar region injured one person and damaged at least 12 houses, the governor of the southern Russia region said early on Monday.
In a post on the Telegram messaging app, Governor Veniamin Kondratyev called the attack "massive", but did not provide further detail.
Russia's SHOT Telegram news channel reported that Ukraine tried to attack the Ilsky oil refinery and that drone wreckage sparked a fire there.
Reuters could not independently verify the report.
There was no immediate comment from Ukraine. It has said in the past its attacks inside Russia target infrastructure key to Moscow's war efforts.
The refinery, which has a capacity of around 138,000 barrels per day, has been a target of numerous Ukrainian attacks since 2023, when Kyiv stepped up its drone attacks on Russian energy infrastructure.
