LEEDS, Maine (AP) — Authorities say five cars of a freight train carrying chicken feed have derailed in the town of Leeds, Maine, and they remained upright during the accident.

No one was hurt in the 6 a.m. Friday derailment.

The train is operated by Pan Am Railways in Billerica, Mass. Cynthia Scarano, executive vice president for Pan Am, says the cars derailed as they were being switched for a delivery to a customer. She said the railway is investigating what happened.

She said since the cars remained upright, none of the chicken feed spilled from the train. At least three cars were back on track later in the morning.