US Secretary of State Rex Tillerson has twice sought out Foreign Minister Winston Peters to discuss a mystery project about the Asia-Pacific region, expected to be announced soon.
The mystery prompted speculation that the special project involved North Korea, which Peters visited during his last stint as Foreign Minister and has spoken about since, saying he did not believe it was a hopeless cause.
However, the Herald understands it does not relate to North Korea.
Peters has met with US Secretary of State Rex Tillerson twice in recent days on the sidelines of the East Asia Summit in Manila, but early this morning would not be drawn on the details.
"I can't tell you about the details of it," Peters said after the meeting.
"It's to do with this region and initiatives coming in the future but it would be remiss of me - the Prime Minister has been fully informed of it - to divulge what it was about until we know."