This was reported by the General Staff.
They stated that the refinery was struck by fighters from the Drone Forces, Main Intelligence Directorate, and Special Operations Forces of the Armed Forces of Ukraine, in coordination with other components of the Defense Forces.
According to the General Staff, the refinery primarily produces gasoline, fuel oil, and diesel fuel, totaling over 20 types of petroleum products.
This facility is also directly involved in supplying the Russian occupying army.
Meanwhile, the Russian Ministry of Defense claimed that they allegedly shot down 40 Ukrainian drones overnight, 18 of which were over the Saratov region. The Ukrainian side has not yet commented on these events.