Detectives are reportedly closing in on the last resting place of NSW anti-drugs campaigner Donald Mackay, who is believed to have been murdered by the Mafia.
Mr Mackay disappeared after leaving a pub in Griffith, in the state's southwest, in July 1977.
His keys were found next to his blood-stained mini van and three spent bullet cases were found nearby.
Mr Mackay's body has never been located but police are back on the case after a new lead prompted hopes of finding his burial place.
"We have had some information that's come in in recent times, as to various locations (of Mackay's remains), and we're having a look at that and just seeing how viable it is (to pursue)," Detective Chief Inspector John Lehmann told Fairfax.
"But it may well be that we have a location, a search area, and be able to do some looking soon."
Fairfax also reported that NSW Police and the state government will on Friday announce a $200,000 reward for information leading to Mr Mackay's remains.
The former Liberal Party candidate and father of four was 43 when he disappeared.
It's thought he was killed after his anti-drugs campaign riled Griffith Mafia dons.
