Police insist they still need help from the public to bring George Taiaroa's killer to justice.
They are closing in on a main suspect, and a motive, after recovering the Jeep Cherokee which had been seen at the road works where the 67-year-old was shot dead.
But Detective Inspector Tim Anderson is not giving anything away about where vehicle was found, the circumstances in which it was located, or the nature of forensic tests that are being carried out on it.
"That jeep is currently subject to a forensic analysis, or examination by scientists. I can't go into the specifics about why we believe that is our jeep, but I can say we're confident it is."
Detective Inspector Anderson says police are working on the possibility their main suspect is being protected or actively assisted by others.
Photo: Police search property in relation to shooting of George Taiaroa (Grayson Ottaway)