Feb 11 (Reuters) - A Ukrainian drone attack damaged an

"industrial facility" in Russia's Saratov region, the regional

governor said early on Tuesday.

"According to preliminary information, there are no

casualties," the governor of Saratov, Roman Busargin, said in a

post on the Telegram messaging app.

Several unofficial Russian Telegram news channels, including

the Shot news telegram channel, reported explosions and fires in

the area of an oil refinery in Saratov, a region in Russia's

south.

Videos and photos published on social media showed a large

fire sending thick clouds of smoke into the night sky. Reuters

could not independently verify the reports. There was no

immediate comment from Ukraine.

Kyiv has often said that its air attacks inside Russia are

aimed at destroying infrastructure key to Moscow's war efforts

and are in response to Russia's continued attacks on Ukraine

since the start of the war nearly three years ago.

In January, an Ukrainian attack on an oil depot positioned

near a military air base in Engels in the Saratov region sparked

a fire that took days to be put out.