BELFAST, Maine (WGAN) The State Fire Marshal’s Office says the cause of a Thursday night fire in Belfast that destroyed the offices of an agricultural facility on Pierce Street is undetermined.

Investigators say the fire started in the attic area in the offices of Penobscot McCrum, but because the building was destroyed, the exact cause cannot be determined.

The fire was reported by a cleaning crew in the offices around 6 pm. An excavator was used to assist firefighters at the scene and all that remains is the cellar where the building once stood.

There were no injuries.