The Ministry of Foreign Affairs has confirmed it is investigating the leaking of documents to Labour's foreign affairs spokesman Phil Goff and has called in the State Services Commission to help.
Mr Goff was leaked two Cabinet committee papers this week which set out the revised proposals for the restructuring of the Ministry of Foreign Affairs - before the papers even made it to Cabinet.
Yesterday Foreign Affairs Minister Murray McCully said it was up to Mfat's chief executive John Allen to deal with the leak as it was his ministry. He had not seen the documents, but would expect Mr Allen to take the leak of a Cabinet paper more seriously than other documents "but any leak of documents is serious".
He said he still had confidence in Mr Allen.
"I've got confidence Mr Allen is making a very solid attempt to do a very difficult job at the moment, made very much more difficult by some very unprofessional behaviour by one or two people."