A big rig burst into flames early Friday after it veered off the northbound 710 Freeway near Lynwood and hit a tree, killing the driver, authorities said.
The crash occurred shortly before 1:30 a.m. near Imperial Highway, according to the California Highway Patrol.
Irving Pacheco, who was driving home at the time, told KTLA-TV he heard the explosion after the big rig crashed.
"I see this big rig go straight to the right. I pull over ... and then all of a sudden it just blows up," he said. "You just hear a big loud 'boom' and you see it burst into flames even more."
Firefighters arrived to find the cab of the truck fully engulfed in flames. The surrounding brush had also caught fire.
It took firefighters about 15 minutes to extinguish the blaze.
The truck's female driver was not immediately identified.