Fire crews were called out to the 570 block of Olive Street in Happy Valley around 10:30 Sunday night for reports of a double wide mobile home on fire. The fire was contained about 45 minutes later, but not before burning at least half of the home. Officials believe the blaze started in the kitchen or living room, but the cause of the fire is under investigation. The home belongs to an elderly woman, who was not there when the fire started. Anderson, Shasta County & Happy Valley fire companies battled the blaze. No one was injured.