Ukraine launched drones on several Russian regions overnight, Russian officials are saying this morning, with Russian news outlets reporting a fire at the Ryazan oil refinery after the attack.
Pavel Malkov, governor of the Ryazan region in western Russia, said there were no injuries in the drone attacks there.
But Russian Telegram channel Baza, which is close to the security services, said the attack sparked a fire at the Ryazan refinery.
"Eyewitnesses reported that a rumble was heard, and then two explosions occurred," the channel reported.
"Operational services employees are currently working at the oil refinery. According to preliminary data, no victims."
The refinery, owned and run by Rosneft, refines about 5.8% of Russia's total refined crude.
It has been a frequent target for Ukraine's air attacks.
