Aug 11 (Reuters) - The Ukrainian military said on Tuesday it attacked an oil refinery in the Russian city of Orsk, the second-largest city in the Orenburg region and an important industrial hub.

In a statement on Telegram, the Ukrainian military said it had targeted the Orsknefteorgsintez oil refinery, which has an annual crude oil capacity of 6 million tons. “Fire was recorded. Damages are being ascertained,” it said.

The Orsk refinery produces gasoline, diesel and aviation fuel, fuel oil, bitumen, and other petroleum products.

(Aleksandar Vasovic; Editing by Andrew Heavens, Aidan Lewis)