UPDATE | 28 hurt when Calif. train crashes into abandoned truck

OXNARD, Calif. (AP) — A commuter train slammed into an abandoned truck early today, causing a fiery derailment that injured dozens of people as three rail cars tumbled onto their sides northwest of Los Angeles.

A total of 28 passengers were taken to hospitals, four with critical injuries, according to the Oxnard Fire Department.

Glenn Frisbie was driving to work and sitting at an intersection about a block away when the train struck the truck.

"I saw a bright flash, a big fireball and flames, flames going pretty high," he said.

Authorities were questioning the truck driver, whom they said left the truck on the tracks and was found several miles away after the crash.

For reasons that are not yet clear, his truck was sitting on the tracks at a marked crossing about 5:44 a.m. as the train approached, fire officials said.

The Metrolink train carrying 51 passengers was heading from Ventura County to Los Angeles.