FORT PIERRE, S.D.—The South Dakota State Fire Marshal’s Office is investigating a house explosion that killed a baby and her grandparents and left two young children hospitalized with burns. The house about 11 miles southwest of Fort Pierre exploded around 10:20 a.m. Wednesday, Stanley County Sheriff Brad Rathbun said. The sheriff said 6-month-old Harper Hupp…

FARGO, N.D.—The first winter storm of the season to blast off from the Rockies was unloading its energy Thursday primarily in North Dakota, where it could dump up to 18 inches of snow and kick up winds as high as 50 mph. The system started with a round of freezing drizzle that made driving tricky…

CANDO, N.D.—Sheriff’s deputies are investigating the deaths of four people found shot in a wheat field in rural northeast North Dakota as a murder-suicide. The Towner County Sheriff’s Office said deputies were dispatched to the field south of Cando, the county seat, about 6 p.m. Monday for a report of four unresponsive individuals. Responding deputies…

Bismarck, N.D.—The company that operates the Dakota Access oil pipeline is asking the U.S. Supreme Court to reverse an appellate ruling ordering additional environmental review, saying it puts the line at risk of being shut down. A Washington, D.C., Circuit Court of Appeals panel earlier this year supported the Standing Rock Sioux and other tribes’…

The operators of the Dakota Access pipeline will face $93,200 in fines due to safety violations, according to a Friday Department of Transportation Pipeline and Hazardous Materials Safety Administration notice. Energy Transfer, the company that operated the Dakota Access pipeline, violated regulations in at least six locations because the valves used for drainage of stormwater…