LAWTON, OK (KSWO) - The Lawton Fire Marshal's office is investigating the cause of a house fire that erupted Saturday. Around noon, firefighters were called out to the 1600 block of Southwest Washington Avenue just south of Lee Boulevard. Officials say flames were shooting up through the roof, and there was heavy smoke. The home was vacant at the time. Officials say the home is nearly a total loss. It has heavy smoke and structure damage.