You are not permitted to download, save or email this image. Visit image gallery to purchase the image.
The author of the book released on Wednesday told Radio New Zealand this morning that he was considering releasing some of the documents provided to him by an anonymous source.
Since the release of the book Prime Minister John Key, Judith Collins, and Whaleoil blogger Cameron Slater, some of the key subjects of the book, have claimed the allegations put forward by Mr Hager were lies.
Mr Hager told Radio New Zealand that the idea of releasing the source material behind the main areas of dispute came to him yesterday.
"If people see the original documents themselves it will give people reassurance."
Mr Hager said he wouldn't release all of the documents because some of them were of a personal nature.
"A lot of it doesn't actually reach the standard of public interest where there actually is a right to use it," he said.
He said he would be consulting with his source today.
Judith Collins told Newstalk ZB this morning that the allegations the book makes that she assisted a prisoner transfer for Mr Slater was an "utter lie... absolutely, completely false."
She said "pretty much" all allegations about her in the book were lies.
Mr Hager's book - based on thousands of messages between Mr Slater, National Party spin doctor Jason Ede and others - claims Mr Ede ran Mr Key's dirty tricks operations which were kept at arms' length from the Prime Minister to avoid damaging his image.
One of the allegations is that Mr Ede covertly accessed the Labour Party's computer systems in mid-2011.
Mr Key yesterday told reporters in Dunedin yesterday that Mr Ede was not involved.
- by Sophie Ryan