RACELAND - A woman was killed in a single-vehicle crash Saturday morning after allegedly speeding and driving off the roadway.

The crash happened shortly after 9 a.m. Saturday on LA 182 near LA 307 in Raceland, State Police said in a Sunday release.

Investigators say 61-year-old Marcel Bentley was driving west on LA 182 at a high speed. While in a curve, her vehicle ran off the roadway and struck a culvert.

Bentley was seriously injured despite wearing a seatbelt at the time of the crash. She later died in a hospital, troopers say.

State Police say the cause of the crash is unknown. A toxicology sample was taken from Bentley for analysis.

Troopers remind drivers that "when a motorist speeds, they increase their chances of being injured in a crash, increase their chances of losing control, reduce their ability to react to and avoid a roadway hazard, and extend the distance necessary to stop a vehicle."