Police investigating the cold blooding killing of stop-go road sign worker George Tairoa say they have reached a turning point.
They have now identified a main suspect, have seized a vehicle they believe was involved in last month's shooting and also believe they are closing in on the motive for the killing.
Detective Inspector Tim Anderson believes their suspect is being protected or helped by others.
He won't name any of the individuals concerned as it may hinder the investigation.
Forensic investigators are now combing the vehicle they have seized, and Detective Inspector Anderson says they are still interested in the movements of a late '90s, dark blue Jeep Cherokee on the day of the murder and the days that followed.
He particularly wants to hear of sightings of the jeep in south Taranaki, Taumarunui, Benneydale and Rotorua.