Channels and accounts on social media reported a drone attack on the Siberian city of Omsk on 11 November, with several saying the city's oil refinery had been targeted. No Russian or Ukrainian official statement was included in the material reviewed.

The Telegram channel NEXTA posted that Omsk was under a drone attack. A second post said one of two videos included audio of air defence systems operating, and noted that Omsk is home to Russia's largest oil refinery 12. The post did not confirm damage or casualties.

Other accounts went further. WarTranslated, also on Telegram, said a large-scale attack was under way on the refinery 3. The account @Osinttechnical wrote on X that the plant was on fire after being struck by multiple Ukrainian attack drones 4. A separate claim attributed to that account, that this was the ninth Russian refinery hit in recent weeks, was not supported by any independent count here.

A YouTube channel, The Enforcer, said the refinery had been hit several times and described it as an inferno 5. Claims that the facility was taken out of operation come from that channel alone and have not been confirmed by the refinery's operator or Russian authorities. Reports also cited unverified claims of explosions lasting more than two hours, relayed by WarTranslated from other reports 3.

The reports come amid other activity in the region over the previous three days. Drone attacks were reported on the Ust-Luga oil export terminal in Leningrad Oblast on 10 November, and a drone swarm was reported heading toward the St. Petersburg area the same day. Separately, Ukrainian authorities and the air force reported large Russian drone and missile attacks on Ukraine, though several of those reports remain unconfirmed.

No deaths or injuries were reported in connection with the Omsk incident. The posts describe the event as it unfolded and do not give a full picture of what was hit.