The name of the victim was not released. No one in the train's crew was injured, said John Bromley, a spokesman for the Union Pacific Railroad in Omaha, Neb.

The incident happened about 8:30 a.m. along U.S. 90, about 10 miles east of Uvalde.

Bromley said witnesses reported the truck lodged in an empty box car of the 112-car, eastbound train headed from Southern California to San Antonio.

Bromley said the train dragged the truck to a nearby bridge, where it derailed eight or nine cars. At least one car and the bridge caught fire, but Bromley said the flames were quickly extinguished. No hazardous material was spilled, he said.

Tom Vinger, a spokesman for the Texas Department of Public Safety in Austin, said a preliminary report indicated that some of the derailed cars contained residue of hydrochloric acid. He said there was no report that any of the residue spilled.

Vinger said the highway was closed temporarily after the accident, mostly to let crews clean up a diesel-fuel spill caused by the initial collision.