Johnston said he was keeping an open mind as to whether the person's death was suspicious.
"The post mortem will give us a clearer steer on that," he said.
Members of the police search and rescue team trained in body recovery were expected to remove the remains late this afternoon.
The body was found about 12.30pm on Monday by a Top Energy crew clearing bush under power lines near Taipa's town centre.
Last November the remains of a Korean man who had been missing for 14 years were discovered in similar circumstances by Northpower workers clearing vegetation under powerlines in Morningside, Whangārei.
The 74-year-old, who suffered from Alzheimer's, was thought to have got lost after going for a walk on Otaika Rd.
Police have a number of missing person files in the Far North, including in the Taipa area.