A 31-year-old man was killed early Monday when the car he was driving slammed into a tractor-trailer on I-20 in DeKalb County, authorities said.

DeKalb police Major S.R. Fore said the wreck happened about 1:45 a.m. on I-20 westbound just west of Evans Mill Road.

He said the tractor-trailer was merging back onto the interstate from the right shoulder when a Ford Focus approached in the center lane.

“The Ford drifted from the center lane into the right lane and struck the rear of the tractor-trailer, pinning the victim inside the vehicle,” Fore told The Atlanta Journal-Constitution in an email.

He said the Ford driver, whose name has not been released, died at the scene.

All westbound lanes of I-20 were shut down for nearly four hours, but reopened about 5:30 a.m.