A Ukrainian drone attack damaged a facility at the Moscow oil refinery owned by Russia's Gazpromneft, Moscow Mayor Sergei Sobyanin said on Tuesday."There were no casualties. ‌Emergency services ⁠are ⁠working at the scene," Sobyanin wrote ​on Telegram. Sobyanin did not say whether the ​refinery's operations have been affected.The plant, the biggest in the Moscow region, ​processed 11.6 million tons ⁠of oil, ‌producing 2.9 million tons ​of ​petrol and 3.2 million tons ⁠of diesel in 2024, the latest ​available data.Also Read: US Air Force B-52 bomber crashes in California, killing all 8 crew aboardThe number of drone ​strikes on Russian refineries has doubled since the start of 2026, leading to full or partial shutdowns of oil processing and a ‌decline in the production of gasoline, diesel, and jet fuel, ​according to ​official ⁠data, social media, and Reuters calculations.Also Read: 'Pyrrhic victory': Iran war leaves no clear winners, experts sayThe Gazpromneft refinery serves the Moscow region, which has ​not so far been among the dozen or so Russian regions where there have been supply disruptions.