Pressure is building on the Special Minister of State Mal Brough to stand aside over his involvement in the Peter Slipper affair.

Key points: Channel Nine releases transcript of 60 Minutes interview with Mal Brough

Channel Nine releases transcript of 60 Minutes interview with Mal Brough Transcript shows only journalist's stumbles edited out

Transcript shows only journalist's stumbles edited out Contradicts Mr Brough's claims his answers were edited

The Australian Federal Police (AFP) is investigating Mr Brough for any role he played in getting former staffer James Ashby to obtain copies of the then-speaker's diary in 2012.

A police search warrant seen by the ABC says that procuring someone to disclose those documents and provide them to third parties without authority would be a breach of the Crimes Act.

In an interview with 60 Minutes last year, Mr Brough appeared to admit that he did ask Mr Ashby to procure Mr Slipper's diary, but under sustained questioning from Labor yesterday he cast doubt on that admission, telling Parliament "what was put to air was not the full question".

60 Minutes has since released a full transcript and vision of the interview, which appears to contradict Mr Brough's statement.

It shows journalist Liz Hayes fumbling for words at the start of the question.

What is a Special Minister of State? Special Minister of State is responsible for integrity within the parliament.

Special Minister of State is responsible for integrity within the parliament. The role specifically administers parliamentary integrity, along with oversight of public interest disclosure and electoral reform.

The role specifically administers parliamentary integrity, along with oversight of public interest disclosure and electoral reform. The role has previously been held by Shadow Attorney-General Mark Dreyfus.

The role has previously been held by Shadow Attorney-General Mark Dreyfus. Mr Brough also serves as Minister for Defence Materiel and Science.

"Um why then also did you um assist, seek well, did you ask James Ashby to procure um copies of Peter Slipper's diary for for you?" Hayes said.

"Yes I did," Mr Brough replied.

"Why did you do that?" Hayes responded.

"Because I believed Peter Slipper had committed a crime. I believed he was defrauding the Commonwealth," Mr Brough said.

Labor says Mr Brough has misled Parliament and is again calling on him to resign.

Shadow Attorney-General Mark Dreyfus has been leading the questioning on the floor of Parliament and said Mr Brough had been "giving different answers on each day".

Mr Dreyfus told the ABC Mr Brough had reached a new low in blaming journalists.

He said he should not have been appointed as Minister while this "scandalous" situation was ongoing.

"He is under investigation by the Australian Federal Police," he said.

"Extraordinarily, the Australian Federal Police executed a search warrant at his house. I cannot remember the last time a serving minster in the Government of the Commonwealth was the subject of a search warrant, executed on his own house."

Mr Dreyfus said that while Mr Brough had not been charged, the Parliament's standards of conduct were clear about when he should be forced to resign.

"If he was charged, he would have to stand aside," he said.

"But even before he is charged, if there is what is described in the guidelines as a prima facie case or a clear case, he should stand aside then too."

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Prime Minister Malcolm Turnbull, who has previously expressed his support for Mr Brough, arrived back in Canberra from the Paris climate talks today and is likely to face questions over the affair.

Father of the House Philip Ruddock supported Mr Brough this morning, though told the ABC that Parliament should "see how it unfolds".

"There are appropriate standards," he said.

"I have heard explanations that would satisfy me but let's see how it unfolds."

There are only two days of Parliament left before the end of the year and a short time for the Opposition to claim a scalp, but enough time to put pressure on Mr Turnbull to address the issue.

Mr Brough defeated Mr Slipper in the seat of Fisher at the 2013 election, but he has consistently denied any wrongdoing.

Yesterday, Mr Ashby told Macquarie Radio that Mr Brough "never, never, ever, ever" asked him for copies of the diaries of Mr Slipper.

Mr Ashby now maintains he went to Mr Brough with copies of the diaries.

"I don't know exactly how that 60 Minutes interview was cut, but obviously it didn't look good for Mal Brough," he said.

"But I can assure you that never at any point did Mal Brough ask me for copies of those diaries."

Mr Ashby also gave an interview to 60 Minutes last year, where he appeared to accept the proposition that Mr Brough asked for the diaries.

"I must admit I was more than willing to assist Mal with the information that he was seeking," he said in the 60 Minutes interview.