The following is from the ATSB website. Not too much doubt on why the engine stopped.
"The ATSB is investigating a fuel exhaustion event involving a Cessna 182, VH-DNZ, at Adelaide, South Australia, on 2 October 2015.
While conducting parachuting operations, the pilot declared a fuel emergency, and conducted a forced landing onto a raceway. The aircraft collided with terrain, resulting in substantial damage. Two passengers sustained serious injuries and two others were uninjured. The pilot sustained minor injuries.
As part of the investigation, the ATSB will interview the pilot and gather additional information.
A report will be released within several months."