The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of millions of gallons of crude oil from Canada to refineries in the U.S. and potentially leading to higher gasoline prices.

The flames from derailed train cars carrying hazardous material are mostly extinguished a day after the incident in a remote area of North Dakota.

Rail cars carrying hazardous material have derailed and burst into flames in a remote area of North Dakota.