The Waterloo Fire Department responded about 5:15 p.m. Monday for a call of a fire in an upstairs bathroom at 1330 Stonefield Drive. Early reports were that the fire was spreading to the attic.

A bathroom vent fan caught fire, but it was extinguished when the fire department arrived. The cause of the fire was not known, according to Waterloo Fire Chief Aaron Shive.

Firefighters were on the scene for less than 30 minutes.

Everyone had safely exited the house prior to police and firefighter arrival.