HAYES, S.D. (AP) — Authorities say a 50-year-old woman is dead after a one-vehicle crash west of Hayes, in Stanley County.

The South Dakota Highway Patrol says the woman was driving a 2004 Buick LaSabre east on U.S. Highway 14 Saturday morning when she lost control. The car entered the north ditch and rolled.

The patrol says the driver was not wearing a seatbelt and was thrown from the car. She was pronounced dead at the scene.

The crash remains under investigation.