The cause of the rupture and the total volume of oil released after the North Dakota spill remain unclear, officials said.

The Keystone pipeline system, which carries crude oil from Canada to the United States, was shut down on Tuesday morning ...

An employee on a pump station heard what was described as a mechanical bang early Tuesday morning, an official told CBS News.

BISMARCK, N.D. — The Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, with the spill ...

South Bow has shut down the Keystone Pipeline due to a leak in a portion of the tract passing through North Dakota. The Calgary, Alberta-based energy infrastructure company said Wednesday that the ...

The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow ...

A portion of the Keystone Pipeline ruptured near Fort Ransom, North Dakota, around 7:44 a.m., according to local reports.

The Keystone pipeline carrying crude oil from Canada to the United States has burst after reports of a large bang.

The incident was made public around 11:30am Tuesday morning, but the company says the shutdown was initiated at 7:42am.

The Keystone oil pipeline was shut down Tuesday morning after a rupture in North Dakota halted the flow from Canada to U.S.

The Keystone oil pipeline from Canada to the United States was shut on Tuesday after an oil spill near Fort Ransom, North Dakota, its operator South Bow and the state's Department of Environmental ...