A Ukrainian drone tried to attack a large oil refinery in the city of Nizhnekamsk on the Volga River, the city’s mayor said on Tuesday, adding that there were no casualties or damage, TASS reports.

Another Russian news agency RIA reported that electronic warfare intercepted a drone near the Taneco Taneco oil refinery in the Republic of Tatarstan. As RIA reports, a fire broke out at the refinery, which was extinguished in 20 minutes without stopping production.

Reuters analysis of footage of the attack, however, showed that the drone struck the refinery’s primary oil processing unit (CDU-7).

“Taneko” oil refinery is one of the largest and newest refineries in Russia. Its production capacity is approximately 360,000 barrels per day.

The affected unit provides about half of the plant’s total annual capacity of more than 17 million tons (340,000 barrels per day).

Another clip that has surfaced online (unverified) appears to show a drone flying over an oil refinery, but the footage stops before the drone dives.

This attack on an oil refinery was not the only one carried out on Tuesday in the Russian republic of Tatarstan.

On Tuesday, as a result of a drone attack, factories in Tatarstan, located more than 1,100 km from the border with Ukraine, were targeted, and several people were injured, regional authorities said, as quoted by AFP. This economic zone is home to an industrial unit where Russia wants to produce thousands of Shahed drones with the help of Iran, The Washington Post reported last summer.