For the nth time. There is no indication that this was a NVMC related incident. Do I need to repeat this slowly? Because it was reported after last light it has been assumed by many that it occurred after last light. But either look for my earlier posts or do the homework yourself and look up last light at Horsham or Nhill.
Looking at the ATSB preliminary investigation they have the accident at 1850 EST. With last light at around 1825 EST, I'd say it is a NVMC accident.