Emergency services were called to the crash site, approximately 12 kilometres north of Dubbo, at about 3.30am on May 6 after a 4WD and a B-double collided. 

Officers from Orana Local Area Command attended and established a crime scene.

Five people were travelling in the 4WD with two boys, a nine-year-old and a 12-year-old, found dead at the scene.

An adult male and female from the vehicle were treated at the scene for minor injuries but not conveyed to hospital.

A third child, a four-year-old boy with internal injuries, was airlifted to Westmead Children’s Hospital in a serious condition. 

The male truck driver, and only occupant of that vehicle, was treated at the scene for serious injuries and was airlifted to hospital.

Following investigations by police from the Metropolitan Crash Investigation Unit, a 53–year-old man was issued a Future Court Attendance Notice on July 17.

He will face Dubbo Local Court on August 30 to face two counts of dangerous driving occasioning death - drive manner dangerous, and single charges of cause bodily harm by misconduct in charge of motor vehicle, negligent driving occasioning death, and not keep left of dividing line - class B/C vehicle.