Just hours after leaving his daughter's engagement party on October 26, Mal Hackett, 51, was discovered by a passing motorist on the side of Red Hill Road at Glenfield Park. The Riverina Police District and the Crash Investigations unit in Sydney worked together and on Monday charged a 57-year-old man with failing to stop and assist after vehicle impact causing death.

Inspector Adrian Telfer said the Wagga man was working for a taxi company at the time, and there were passengers in the car.

He added that at this stage there were no suspicions the driver had been negligent or impacted by drugs or alcohol. Inspector Telfer said the day after Mr Hackett died, the taxi driver spoke to police at the station.

"We had to make sure that the story that was provided to us was accurate," he said.

"We will be alleging the 57-year-old driver collided with a male, who is now deceased, and failed to render assistance. I can't go into what his reason was [for allegedly failing to stop], that is something that will play out in court. At this stage, we believe it was an accident. We will allege that in the circumstances leading up to this collision, the manner of driving was not dangerous."

Police believe the victim was walking on the road at the time of the collision.

Inspector Telfer said it was unlikely the passengers will be face any charges. He added the taxi driver has retained his driver's license.