Fairfield firefighters responded to a warehouse fire on Thorpe Street Tuesday night.
The department received a call reporting visible smoke rising from the southernmost warehouse on the former Fairfield Lumber site, fire officials said. Firefighters arrived to find a structure fire, which spread to the center and northern-most warehouse.
Southport Tactical 14, Stratfield Rescue 15, Fairfield police, AMR, American Red Cross, United Illuminating and Aquarion also responded.
By 9:55 p.m., firefighters had the blaze under control and Fairfield and Bridgeport crews extinguished any hot spots.
Area departments, including Southport, Westport, Norwalk, Easton and Stratford covered the Fairfield station in case any other calls came in while they were responding.
The cause of the fire is unknown.
