A three-alarm fire extensively damaged Bradley’s Fern Park, 9175 Susquehanna Trail in Northumberland County’s Delaware Township, late Monday afternoon, Feb. 17.

The fire broke out about 5:20 p.m. and burned out of control for nearly 90 minutes. Volunteer firefighters from three counties battled the blaze.

The business was closed and an upstairs apartment was unoccupied at the time of the fire, Tom MacDonald, assistant chief for the Warrior Run Volunteer Fire Co., said.

One firefighter was treated at an area hospital for unspecified injuries. The cause of the fire is still under investigation.