A fire on the 3000 block of Woods Edge Way late Thursday night, Dec. 6, left a two-unit condominium building with $800,000 in damage and two families displaced.

Upon the 11 p.m. arrival at the building, after a report of a possible explosion, firefighters found it engulfed in flames and heavy smoke, according to a news release from the city of Fitchburg fire department.

Traffic was shut down on McKee Road near Seminole Highway to allow emergency vehicles from the city, as well as units from Verona, Oregon, Madison, Middleton, Belleville and Maple Bluff, to access the area.

The cause and exact start location of the fire is still under investigation by the department, the release said, but is not thought to be suspicious in nature.

Meredith Shelton, public information officer for the department, told the Star in an email that investigators spent most of the day on Dec. 7 at the property in an attempt to identify the cause.

The two families were able to safely evacuate and the building is uninhabitable. Madison Metro and the Red Cross were on scene to assist the residents.

Email reporter Kimberly Wethal at kimberly.wethal@wcinet.com and follow her on Twitter @kimberly_wethal.​