Cables from the whistle-blowing website Wikileaks reportedly reveal New Zealand has been using its Waihopai communications base to spy on Fiji's military.
The news website Stuff reports the base was used in the 2006 coup and probably the 2000 coup, although New Zealand officials have always denied that they were spying.
It says the WikiLeak cables, taken with other information made public on Fiji, point to the Government Communications Security Bureau being capable of listening in to Fiji mobile phones.
The US deputy secretary Margaret McKean says in a cable that New Zealand views the situation in Fiji as `acute', and appreciates the US Government support for the Pacific Island Forum position on Fiji.
They say New Zealand government intelligence had been critical to the United States' understanding of the 2006 coup.
The cable does not disclose what New Zealand intercepted.
The New Zealand Government says it is long standing policy not to comment on issues of security.