ATTLEBORO, Mass. (WPRI) — An investigation is underway into the cause of a fire that damaged four tractor-trailer trucks in Attleboro Monday night.

Attleboro Fire Chief Scott Lachance said the fire broke out behind a commercial building on Pleasant Street.

Lachance said the four trucks were filled with cardboard, which fueled the fire.

No one was injured and the cause of the fire is under investigation.