New details of a cyanide threat against a New Zealand golf tournament starring Tiger Woods have been revealed.
Labour MP Trevor Mallard was duty minister when a cyanide-laced letter was delivered to the United States Embassy in Wellington.
The letter, delivered in December 2001, threatened terrorist action against the New Zealand Golf Open, due to take place the following month with Woods attending.
Mr Mallard, who recalled the subsequent security operation after this week's reaction to the 1080 milk formula threat, said it was believed to be a hoax but still taken seriously.
Police tightened security at the golf open at Paraparaumu, north of Wellington, and warned the public to be vigilant against food and drink tampering, but were not more specific.