The man who was jailed for threatening to spike infant formula in blackmail letters to Fonterra and Federated Farmers has been denied parole.
The Parole Board has decided Jeremy Hamish Kerr "remains an undue risk to the community".
Kerr's blackmail was estimated to have cost the nation $37 million and it put at risk our biggest export market.
"News of Mr Kerr's activities had far-reaching effects not only for Fonterra but for New Zealand as a whole," Parole Board panel convenor Judge C Blackie said.
In November 2014, Kerr mixed highly concentrated amounts of the poison with baby milk formula and posted them to the dairy co-op and to Federated Farmers, with a letter demanding the country stop using 1080 or he would release poisoned infant milk powder into the Chinese market and one unspecified market.