KENNEBEC, S.D. - A one-vehicle crash early Thursday morning left one man dead and another seriously injured on the Lower Brule Indian Reservation, 20 miles northeast of Kennebec.

At 4:11 a.m. Thursday, a 27-year-old man driving a 2005 Chrysler 300 was traveling eastbound on BIA Highway 10 when the vehicle crossed over the centerline to the right and drove off the roadway and into a ditch.The vehicle flipped over and came to a rest on its wheels, ejecting both occupants who were not wearing seat belts, according to the South Dakota Department of Public Safety.

The 27-year-old male passenger was pronounced dead at the scene, while the driver sustained serious non-life-threatening injuries. The driver was transported by ambulance to the Chamberlain hospital and later flown to a Sioux Falls hospital.

Names of the two men are not being released pending notification of family members.

South Dakota's Highway Patrol is investigating the crash, and charges are pending against the driver.