Dozens of calves were killed in a barn fire in The Blue Mountains.

The fire broke out around 11:30 p.m. Tuesday night.

One calf and four horses were able to escape the fire, but more than 40 calves were lost in the blaze.

Fire officials say the barn burned quickly, but they managed to save a nearby shed.

Investigators believe the fire stated in the wiring of an electrical outlet.

The building was not insured.