Investigators say a cigarette may have started a deadly house fire in Arab. The fire happened around 11:30 p.m. Wednesday on Main Street. Firefighters say the front porch caught fire. The body of 42-year-old Tabatha Tammy Clark was found inside the home. Officials believe she was overcome by smoke. An autopsy is planned. According to the State Fire Marshal's Office, this is the 26th fire fatality in Alabama this year.