The crash happened around 10:30 p.m. on Tingen Road.
The crash involved just one car, an Acura. Investigators said the Acura careened off the road in a curve and crashed into a tree.
The force of the crash split the car in half, leaving all three people in the car seriously hurt -- one of them died from their injuries.
All three of the people in the car were seniors at Western Harnett High School. Investigators are still trying to determine what caused the crash.