TULSA - An investigation is under way into an overnight house fire in midtown Tulsa.
Fire crews arrived at the 14th and Delaware home around 1 a.m. The back of the house was fully involved in flames.
Officials said the house was being renovated and no one was inside when the fire began.
Fire officials haven't determined the cause of the fire, though they are investigating the possibility it could have been arson. Investigators have an arson dog on the scene.
No one was injured.