The find is the second in a week after police found other items in bush near Benneydale late last week, which they believe were dumped on the day Mr Taiaroa was shot.
When asked if the owner of the property had been spoken to or was co-operating with the police inquiry, Ms Perks said police would not be commenting on any individuals.
She would not say what led police back to the property, which she said was one of a number of locations they had an interest in.
Police were to continue their inquiries at the property this morning.
A man who lives on a neighbouring 200ha sheep and beef farm said police confirmed to him the property owner was their main suspect.
"I asked them if he was still their main suspect and they said 'yes, he is'."
He had seen his neighbour just once since the shooting when he briefly saw him on his property a few days after the incident.
"But since then, there's been no sign of him at all."
He said detectives came to his home early yesterday morning to use his phone because of a lack of cellphone coverage in the area.
"I asked them what they were looking for or if they found anything and they weren't really letting on."
Anyone with information is asked to contact the investigation team directly on 0800 Kingswood (0800 546 479) or anonymously via Crimestoppers on 0800 555 111.