Footage circulating on Russian social media on Saturday suggests that Ukrainian long-range drones may have struck the Novo-Ufa oil refinery in the Russian city of Ufa, Bashkortostan, nearly 1400 kilometers from the Ukrainian border.

If confirmed, the incident would be among the deepest drone strikes inside Russian territory since the beginning of the full-scale war.

According to local Telegram channels, an explosion was recorded at the refinery at around 13:30, allegedly caused by drone impact.

Eyewitness footage appears to show flames at the site as well as a drone flying over one of Ufa’s neighborhoods.

Earlier in the day, Russian media, citing the aviation agency Rosaviatsia, reported that temporary flight restrictions were introduced at Ufa Airport at about 14:20. The reason was not officially disclosed.

The Novo-Ufa refinery, operated by Russian oil company Bashneft, is one of three major oil processing facilities in Ufa. Together, they form a refining hub with an output exceeding 20 million tons annually. Novo-Ufa alone is estimated to have a capacity of 7.5 million tons of crude oil per year.

This is not the first reported drone strike at the complex. In March, Ukrainian drones allegedly struck the nearby Orgsintez plant, part of the same refining cluster, sparking explosions and a large-scale fire.

As of now, authorities have issued no official statement confirming an attack on the Novo-Ufa refinery. The scale of the reported damage remains unclear.