NSW police are hoping a $250,000 reward for information about a teenager who was hit and killed in the state's southwest two years ago will lead to an arrest.
Braydon Worldon had turned 15 the day he was struck and killed by what police believe may have been a heavy vehicle fitted with a bull bar.
The boy was found by a driver, lying on a road in the early hours of December 19, 2018, about 40 kilometres east of Wagga Wagga. Police believe he had been struck about four hours earlier.
Braydon, who was from nearby Wantabadgery, was last seen alive on his birthday, December 18.
A three-day coronial inquest into the teenager's death has just concluded.
Riverina Police District Crime Manager, Detective Inspector Adrian Telfer told AAP that police had explored a number of leads in the last two years.
He hopes the reward will bring people forward with information.
"We're almost certain that there are people out there who do have information that could assist us" he said.
"We are confident that the driver would be aware of this collision."
He said it has been very difficult for the teenager's family, with their distress only exacerbated by the driver failing to stop.
On Thursday the NSW government issued a $250,000 reward to help catch the driver who hit and killed the boy.
Police are seeking any information from the public regarding heavy vehicles that use River Road, Wantabadgery as well as those that may have been in the Wantabadgery area on the night of December 18, 2018.
It's thought Braydon was on foot and walking near his grandfather's house.
Detective Inspector Telfer, said police are following up every line of inquiry.
"We believe that someone in the community might hold that vital information which will help us provide answers to Braydon's mother, Crystal, and the rest of his family regarding the circumstances of Braydon's death."
NSW Police Minister David Elliott hopes the reward will encourage anyone with information to come forward and help police find much needed answers for the boy's family and friends.
"Any information, no matter how small, could be the piece that police need to solve this case."