BROCKTON (CBS) – A driver was killed in a crash on Route 24 in Brockton early Friday morning.

A car rolled over and crashed in the southbound lanes south of Exit 18 just after 5:15 a.m.

Massachusetts State Police said 22-year-old Brian Charles Jr. of Brockton was ejected from his 2012 Volkswagon Passat after it veered to the left side of the road, hit the median and rolled over.

Troopers shut down three travel lanes and there were significant delays during the morning rush hour. Route 24 reopened after nearly four hours.

Police are still investigating what caused the crash.