The 22 Freeway reopened Sunday afternoon after a suspected DUI crash killed a truck driver carrying mail and packages for the U.S. Postal Service early in the morning, prompting a closure that lasted more than 12 hours, authorities said.

The collision happened around 4 a.m. on the eastbound lanes near Valley View and Golden West streets, according to California Highway Patrol.

The driver of a passenger vehicle somehow lost control, veered to the right and landed on the No. 3 lane facing the wrong way, CHP Officer Duane Graham told KTLA.

The motorist, later identified as a 26-year-old Irvine man, got out and was standing on the right shoulder of the freeway when a tractor trailer struck his car.

The semitruck then slammed into the center divider, overturned and caught fire, Graham said. The driver, a contractor for the U.S. Postal Service, died at the scene, according to CHP. More at KTLA