FAIR LAWN - A four-alarm fire tore through a spa Friday afternoon in Fair Lawn.

The flames broke out at around 1:30 p.m. at the BRC Day Spa & Sauna Resort. Officials say firefighters have responded to the building in the past, and knew it would be problematic to take down.

"There's a lot of masonry work in there," says Fair Lawn Mayor John Cosgrove. "The fire was between the walls, so our crews had to cut holes in the floor and walls to get to the fire."

Nearby buildings were evacuated as a precaution. No injuries were reported, but the spa did sustain major damage inside.

An investigation into the cause of the fire is ongoing.