Dennis Vincent with the Brigham City Police said a report of a mattress on fire at 580 N. Main was called in about 7:30 p.m. When Brigham City fire units arrived, flames were already shooting through the roof and windows at the north end of the 13-unit complex.
Vincent said the fire spread so rapidly due to the open attic space in the building that was once the Twin Pines motel. A mutual aid agreement with neighboring fire units brought Corinne, Willard and the Central Box Elder Fire District to help rein in the fast moving flames.
The fire was under control by 10:30 p.m., but not before flames, smoke and water damage made eight of the units totally uninhabitable.
Vincent said representatives from the Red Cross and The Church of Jesus Christ of Latter-day Saints were immediately on the scene to help the displaced families. Many of those families spent the night at the Brigham City fire station.
Investigators are still on the scene trying to determine the exact cause of the fire that resulted in an estimated $125,000 to $150,000 in damages.