More mystery explosions in Russia.

A fire has erupted at a key Russian oil depot and a second military site near the Ukrainian border, Russian authorities said early Monday.

Social media accounts based in Russia’s Bryansk region shared footage of what they described as explosions and a fire at the Transneft-Druzhba depot. The state-run oil export company’s subsidiary runs one of the world’s longest oil pipelines from Russia to Europe.

Emergency services dispatched fire and rescue crews to the site at 2:00 a.m. Moscow time, the Emergencies Ministry’s regional branch said in a since-deleted statement.

It later told state-run news agencies there were no casualties and no plans to evacuate residents. Bryansk-based social media accounts showed thick clouds of smoke and emergency crews still arriving at the site after sunriseEmergency services told the RIA Novosti news agency that another site it declined to identify has also been engulfed in the fiState television later reported that the first location was a civilian facility housing 10,000 tons of fuel and the second a military site with 5,000 tons.

It was not immediately clear whether the fires less than 100 kilometers from the Ukrainian border were related to the war in Ukraine. Bryansk serves as a logistics base for Moscow's military campaign in Ukraine.