A BNSF train that derailed in central North Dakota on Wednesday was carrying railcars owned by Hess Corp, 10 of which caught fire and forced the evacuation of a nearby town, the oil producer told Reuters late Wednesday.

Emergency crews worked into the night to extinguish the fire. No one was injured.

Hess, the third-largest North Dakota oil producer, said BNSF is leading cleanup efforts but added it stands ready to assist.

The New York-based company said it is "fully compliant" with new North Dakota crude-treatment standards that went into effect last month. The standards, designed to mitigate the incendiary effect of crude-by-rail disasters, require combustible elements be filtered out of crude oil.

It remains unclear whether the new standards helped reduce the fire caused by the derailment, but politicians, first responders and other witnesses described a subdued scene.

"The scene is very anticlimactic and rather nondramatic, which is all very good," Congressman Kevin Cramer (R-N.D.) said in an interview after leaving the site.

The train carrying crude oil derailed and caught fire in Wells County, North Dakota, on Wednesday, officials said, just days after the US government announced sweeping reforms to improve safety of the volatile shipments.

The nearby town of Heimdal was evacuated after as many as many as 10 tank cars of a BNSF train came off the rails, local media and fire officials said. There were no injuries, officials said. BNSF is owned by billionaire Warren Buffett.

A photo posted on Facebook by a local radio station showed flames and heavy black smoke from several tank cars that had derailed in a field.

DETAILS: Wells County Sheriff's Office: BNSF had a train that went off the tracks near Heimdal, North Dakota - KHBD pic.twitter.com/A3VcOvC9Za — Nick Hennen (@tweetbrk) May 6, 2015

According to KX News, Heimdal is a 40-person town in central North Dakota that is located along one of the main rail lines heading east out of the giant Bakken oil patch.

About two-thirds of all North Dakota oil production is shipped by rail; three-quarters of that oil goes to refiners on the US East Coast.

"The FRA has deployed a ten person investigation team to the site and will be conducting a thorough investigation into the cause of the accident," Sarah Feinberg, acting administrator at the Federal Railroad Administration, said in a press statement.

BNSF did not immediately respond to requests for comment.

The derailment came just days after the US Department of Transportation and Canada's Transport Ministry announced new rules last Friday for oil trains, including phasing out older tank cars, adding electronic braking systems, and imposing speed limits. The measures were all meant to reduce the frequency and severity of oil-train crashes.

The volume of crude oil shipped by rail has rocketed in recent years as production increases from areas like North Dakota outpaced new pipeline development.

A spate of explosive accidents have accompanied that growth, the worst of which occurred in July 2013 when a train derailed in the town of Lac Megantic in Canada, killing 47 people.

Already this year, five trains have derailed and caught fire in the United States and Canada, all in rural areas. No deaths have occurred but the accidents have stoked fears about the safety of transporting crude oil by rail.

(Reporting By New York Energy desk; Editing by Frances Kerry)