Residents reported a large-scale fire near the First Plant refinery, the channel claimed at 2:48 a.m.
Townspeople allegedly heard the "sound of drones" and explosions. Rescuers and law enforcement officers are currently on duty near the refinery and traffic is restricted, the channel claimed.
Russian authorities have yet to comment on the incident.
Attacks on Russian refineries
Ukraine has regularly targeted oil refineries in Russia with long-range drones since the end of January.
Ukraine's SBU Security Service has carried out at least 13 successful attacks on Russian refineries, SBU head Vasyl Malyuk said.
As a result, oil production and processing in Russia decreased by 12%, he said, adding that oil export revenues make up one-third of the Russian budget and the "lion's share" of the military budget.
It is known that the following facilities have been targeted:
- Tuapse oil Refinery on Jan. 24
- Volgograd oil Refinery on Feb. 3
- Afip oil Refinery on Feb. 9
- Ilya oil Refinery on Feb. 9
- Lukoil-Nizhny Novgorodnefteorgsintez Plant on March 12
- Ryazan oil Refinery on March 13
- Kaluga oil Refinery on March 15
- Syzran oil Refinery on March 16
- Kuibyshevsk oil Refinery on March 16
- Slavyansk oil Refinery on March 17
- Novokuibyshevsk oil Refinery on March 23
- TANECO oil Refinery on April 2
- Ilsky oil Refinery on April 27
- Slaviansk-ECO oil Refinery on April 27
- Ryazan oil Refinery on May 2