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A Tauranga pensioner feels "violated" after armed police stormed his home, "trashed" the place, and left with three jackets and an air rifle.
Clive Martin, 67, said he learned from neighbours that the armed offenders squad had raided his property on Tuesday afternoon while he was out.
His home is one of dozens police are searching as part of a massive operation after the discovery of alleged weapons training camps in the Bay of Plenty.
Police have so far made 17 arrests.
Mr Martin's Redmond St home was left with a smashed window, a broken window latch and a mess in his shed after the raid. He said he was upset when he found a 20-page search warrant sitting on his table stating there "is reasonable ground for believing" there were items inside which were an offence relating to either "participating in a terrorist group", or the unlawful possession of firearms or restricted weapons.
The warrant stated the home could contain clothing from "camps" in January and June this year, which Mr Martin said he had no involvement in.
Other items suspected of being at the property are detailed on the warrant's four-page list of military-style equipment, some of which has appeared on the internet auction website Trade Me.
Mr Martin said he had no idea why his home was searched and was "gutted" police had linked him to people potentially involved in terrorist crimes.
"It is a big mystery and I feel violated. As far as I'm concerned, I've been violated," he said. "They've trashed my house. I just vacuumed it out - there's dirty mud all over the floor. They've trashed my shed, they've trashed my linen cupboard."
Police took an old oilskin jacket, a raincoat, a polarfleece jacket and magnets that he used to hold loose change. They also took an air rifle.
Mr Martin said he did not own a computer and he had used Trade Me only once, to buy a van.
Bay of Plenty police media spokesman Andrew McAlley could not comment specifically on the raid on Mr Martin's home but said further search warrants were yet to be executed around the country.
Trade Me trust and safety manager Dean Winter said he could not comment on the website's involvement in the police operation because it was before the courts.
However, he warned users of the site: "We do work closely with the police and I think that you'd be naive to think that the police didn't monitor the site. In fact we would encourage that because the more they can do to help us keep the site safe the better it is for us."