KILGORE, Texas — Officials say nobody has been hurt in an East Texas derailment that sent four freight cars off the tracks including one crashing into an unoccupied warehouse.

Kilgore police say the accident happened before dawn Friday and one of the Union Pacific cars overturned. UP spokesman Jeff DeGraff says the train originated in Houston and was headed to Little Rock, Arkansas.

Police say the cars were hauling auto parts and no hazardous materials were involved in the derailment in Kilgore, about 110 miles southeast of Dallas.

Authorities are trying to determine what caused the derailment in an industrial part of Kilgore. Some nearby roads were closed during the cleanup.