MOSCOW (Reuters) – The Omsk oil refinery, Russia’s largest, reported a fire on Monday but said it was operating as usual and that production plans will be fulfilled.

“The fire at the Omsk refinery is under control. The plant’s automatic safety system detected a fire in technological equipment… The company is operating as usual,” the plant said in a statement.

It also said that the two people injured have received treatment at the plant, controlled by Gazprom (MCX:) Neft.

Later it said the fire will not affect its production plan which it will be able to fulfil thanks to additional production capacity.

Some reports on social media said a huge explosion was heard across several districts of the west Siberia city, located some 2,700 km (1,700 miles) east of Moscow.

The reason for the fire was not immediately clear.

The Omsk refinery processed more than 21 million metric tons (420,000 barrels per day) of in 2022.