Freight train derails near Mira Loma in Riverside County

MIRA LOMA, Calif. (KABC) -- A freight train derailed near Mira Loma in Riverside County early Tuesday morning, but no injuries were reported.

According to Union Pacific, the train "derailed six loaded auto racks" in the area of Etiwanda Avenue and Van Buren Boulevard at 3:20 a.m. The train cars remained upright.

The cause of the derailment has not been determined.

The train was headed to Mira Loma from Arlington, Texas.

Metrolink reported delays on its Riverside line due to the derailment.

The Associated Press contributed to this report.