Fire departments from six different towns responded to a roof fire at 33 Turtleback Road South in New Canaan Thursday night, according to fire officials.
The small fire was quickly extinguished and no one was injured, Fire Marshal Fred Baker said in a statement Friday morning.
The New Canaan Fire Department was dispatched to the location at 6:57 p.m. for a reported automatic alarm. While emergency responders were in route, the homeowner called the department reporting an active fire.
"The incident was upgraded to a full structure fire response," Baker said. Fire units from Wilton; Norwalk; Vista, N.Y.; Pound Ridge, N.Y.; and South Salem, N.Y., were called for help.
Arriving on scene, firefighters reported a small fire on the roof adjacent to the chimney in the back of the house. The fire was quickly contained and the house was cleared by 8:25 p.m., Fire Chief Jack Hennessey said.
Hennessey said the interior walls had to be opened to make sure the fire didn't spread into the walls.
Baker said the home's fire alarm system is "credited with alerting the occupants to the fire."
The residents were allowed to return to their home.
The cause of the fire is under investigation.