A head-on collision between two cars on an outback highway has resulted in five deaths, with authorities confirming the fifth victim. Reports describe a fiery crash involving the two vehicles and indicate that the incident is being treated as serious, prompting an investigation into the cause. Details about the circumstances leading up to the collision are not provided in the available summaries, but the confirmed fatality count reflects ongoing confirmation by investigators. Emergency response is implied by the nature of the crash and the deaths, and the investigation aims to determine what factors contributed to the collision. Authorities are also expected to review relevant evidence such as vehicle movements and possible contributing factors, though specific findings have not been stated in the provided information. The coverage from both outlets is aligned on the core facts: a head-on outback highway crash, a fire involving the cars, five confirmed deaths, and an investigation into the cause.