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A fire at Russian oil firm Gazprom Neft's Omsk refinery in southwest Siberia has been extinguished by the local emergency service, Reuters reports.

The fire broke out at one of the plant's units on Monday morning local time, but was brought under control quickly according to the local emergency ministry.

A spokesperson at Gazprom Neft, said production had not been affected and no injuries had taken place. However, one of the plant's units had been temporarily halted.

The Omsk refinery is the second largest Russian refinery in Asia, producing 380,000 barrelsper day (60,000 m3 per day). The company also has a shareholding in the 213,000 barrels-per-day Moscow Refinery.

Gazprom Neft is the oil arm of Gazprom and is the fifth largest oil producing and refining company in Russia. The company's subsidiary, Gazprom Neft Marine Bunker entered the marine fuels market in October last year, when it began making bunker deliveries in St Petersburg.

Last month Gazprom Neft Marine Bunker LLC announced that it would also start to supply bunker fuel in Kaliningrad. It is understood that the company plans to produce marine fuel at the Omsk refinery and use it as a supply source for bunker operations at the port.