Update 1:05 p.m. Tuesday
The Montana Highway Patrol said they are investigating the possible involvement of one or two semi-trailers in the crash.
In a crash report, the MHP said the 33-year-old woman who died was driving a 2003 Jeep Cherokee when the vehicle went off the highway to the right. The driver overcorrected, the patrol said, and the Jeep went into a slide and rolled several times.
The driver died at the scene. A 25-year-old man from Billings was the other occupant and he was flown to a Billings hospital for treatment.
The patrol report lists two semi-tractors as being involved, including a 1987 Kenworth pulling double trailers and 2019 Peterbuilt pulling a single trailer. The report narrative states that the involvement of the semi-trucks in the crash remains under investigation.
BIG TIMBER - One person was killed and another injured early Tuesday in a rollover crash on Interstate 90 in Sweet Grass County.
The crash happened at about 4 a.m. at mile marker 370, Sweet Grass County Sheriff Alan Ronnenberg said in a social media post.
A 33-year-old woman from Gallatin County was killed and a male occupant of the vehicle was seriously injured in the crash, the sheriff said. Both occupants were ejected from the vehicle during the crash.
The male occupant was flown to a Billings hospital for treatment. The names of the victims have not been released.
Ronnenberg said the Montana Highway Patrol is investigating the crash.