Human remains discovered near Taipa on Monday are expected to be removed this afternoon and taken to Auckland for a post-mortem examination.
Detective Inspector Rhys Johnston, who is heading the investigation, said identifying the remains was likely to take some time given the length of time — thought to be several years — they had been there.
He would not speculate on the person's identity or gender.
Forensic methods such as dental records or DNA analysis would be required to identify the remains.
About 10 staff from Whangārei and Kaitaia were working on the case and carrying out a thorough scene examination. The scene remained under guard last night.