Tucson Police are investigating why a driver on the south side crashed into a sign.

66-year-old William Charles Carter was traveling near West Ajo Way and South Sixth Avenue early Tuesday morning when he lost control of the car and collided with a sign.

He died at the scene.

According to a TPD media release, Carter was not wearing a seat belt and had drugs in his system. It is not clear if the drugs or a medical condition contributed to the accident.