Columbia, SC (WLTX) - The SC Highway Patrol confirms at least one person is dead in an accident on I-77 near mile marker 12 at Forest Drive.

The accident happened at about 7:30 p.m. Thursday evening.

According to Lance Cpl David Jones, a 2006 Crown Vic was traveling north on I-77 when it crossed the median and struck a Chevy van head on. The driver of the Crown Vic was killed at the scene, a passenger in the car wasn't wearing a seatbelt and was transported to Palmetto Richland with life threatening injuries.

The driver of the Chevy van was also transported with life threatening injuries.

Traffic in the area was affected for hours.

The accident remains under investigation.