RE22 (A Platoon) responded to an Automatic Fire Alarm on Box 2210. Once on scene they found an outside in fire on the Bravo Side of the house. The fire extended to the interior walls. The assignment was upgraded to a Box Alarm. The searches were negative and the fire was contained to the area of origin. WFD Battalion 2 (Gregg) had the Minquadale Command. The fire is under investigation by the Delaware State Fire Marshall’s Office