Elm Tree Diner Fire Ruled Accidental 

State Fire Investigators say a fire at a popular restaurant in Houlton was caused by an electrical problem in the kitchen. The Houlton Fire Department responded to the call at the Elm Tree Diner about 11 p.m. Sunday.A person checking an alarm at a business across the street heard breaking glass and noticed the fire in the kitchen window.Crews were able to get the fire under control in about 45 minutes, but not before it did some substantial damage to the roof.The restaurant is insured.