BELVIDERE, S.D. – The South Dakota Highway Patrol says two people died Wednesday in a single-vehicle crash near Belvidere, South Dakota.

Preliminary crash information indicates the driver of a 2001 Toyota Tundra was traveling northbound on S.D. Highway 63 when they lost control on the washboards. The Toyota entered the ditch and rolled, ejecting all three occupants.

Two people sustained fatal injuries. They include a 20-year-old female from Bend, Oregon and a 37-year-old male from Olympia, Washington. The third, a 29-year-old female from Redmond, Oregon, was taken to a Rosebud hospital with life-threatening injuries before being transferred to a Sioux Falls hospital.

The Highway Patrol is investigating who was driving the vehicle at the time of the crash.

Names of the those involved have not been released pending notification of family members.

The investigation is ongoing.