North Dakota's state fire marshal is investigating a house explosion west of Williston that injured a man.
Williston Rural Fire Chief Dave Benth says neighbors called 911 after witnessing the blast Monday evening.
The Rural Fire Department and the Williams County Sheriff's Department responded to the scene.
Benth says one person was taken to a hospital to be treated for severe burns.
Authorities on Wednesday did not immediately identify the person.
Casey Malmquist of Whitefish, Montana, was hospitalized and is in stable condition in St. Paul, Minnesota.
Malmquist reportedly suffered second- and third-degree burns and underwent surgery Tuesday.
Malmquist was building houses for Bakken oil field workers.