At around 2:20pm on Friday 3-29-13 Fair Lawn fire dept was dispatched for a reported smoke condition in the basement of an adult day care center on the corner of Broadway and Plaza Rd. firefighters found a working fire in the basement of the adjacent BRC Spa and a 2nd alarm was requested as companies encountered a heavy smoke condition and found fire in the ceiling extending into the walls. The building at 24-20 Broadway was a 1 story former supermarket @200 X 200 which had been renovated several times and divided into several businesses, this combined with mable and granite tiling that had been installed made accessing the fire extremely difficult. For almost 3 hours a moderate to heavy smoke condition emitted from the rear of the building as FF's worked to reach the seat of the fire until conditions rapidly deteriorated, heavy dark gray and black smoke started pushing from the roof followed by heavy fire on the 1st floor, companies maintained an aggressive interior attack and were able to quickly knock down the heavy fire. Firefighters remained on the scene for several more hours opening up and hitting hot spots, the fire was placed PWH at @ 6:30pm and command started releasing mutual aid co's. No injuries were reported and the cause of the fire is unknown at this time. Fair Lawn FD was assisted by Saddle Brook, Elmwood Park, Wyckoff, Paramus, Maywood, Hackensack and Glen Rock fire depts.