ALBANY, OR (From news reports) -- Albany firefighters spent four hours battling a roof fire at the Arauco manufacturing facility Monday night, using a drone with an infrared camera to help pinpoint hot spots and keep the blaze from spreading through the large industrial building.

At about 8:40 p.m., the Albany Fire Department responded to a reported commercial structure fire at the engineered wood products facility at 2550 NE Old Salem Road. The fire was reported on the roof of the plant, which manufactures engineered wood products, including particleboard.

Crews arrived to find active fire burning on the roof and extending into several large air ducts within the facility. Fire suppression efforts were complicated by the size of the structure, challenges associated with safely accessing the fire area, and the need to extend hose lines long distances to reach the seat of the fire.

Firefighters were able to confine the fire to its area of origin and the associated ductwork, preventing further extension into the facility. Crews worked for four hours to bring the fire under control and completely extinguish it.

During the incident, the Albany Fire Department used an unmanned aerial drone equipped with an infrared camera to identify hidden hot spots and help direct extinguishment efforts.

The Albany Fire Department responded with 25 personnel. Mutual aid partners from the Corvallis Fire Department assisted with a ladder truck company and provided a medic unit to maintain emergency medical coverage within the city of Albany during the incident. The Jefferson Rural Fire Protection District also responded with an engine company and a water tender to support firefighting operations.

No civilian or firefighter injuries were reported. The cause of the fire remains under investigation.