KIEV, Sept. 14 (Xinhua) -- The Ukrainian military said it struck the Kirishi oil refinery in Russia's northwestern Leningrad region overnight on Sunday.

The attack caused explosions and a fire at the facility, which is one of the largest oil refineries in Russia, the Ukrainian Armed Forces said in a report.

According to it, the refinery, which produces about 80 types of petroleum products, including automotive gasoline, diesel, and aviation fuel, is involved in supplying the Russian army.