BIDDEFORD — Biddeford firefighters were tied up for more than three hours after a fire broke out near a shredding machine at the Maine Energy Recovery Plant Sunday afternoon.

Lt. Robert Lang said several departments, including Saco and Scarborough, provided backup coverage while Biddeford and Saco firefighters put the fire out.

Lang said trash on a conveyor belt that was bringing debris to the shredder caught fire around 2:37 p.m. Lang said firefighters were not able to leave the plant until around 6 p.m.

There does not appear to any damage to the incinerator, which was acquired by the city of Biddeford recently.