He has asked that the matter be investigated as a priority for possible referral to the Commonwealth Director of Public Prosecutions. But according to a letter from AFP Commissioner Andrew Colvin, Professor Triggs said she did not wish to make a complaint during the investigative process. The evidence of the offer given would also be useless to the investigation as it was given during Senate estimates under parliamentary privilege and cannot be used as evidence. This means the investigation would be based on a "he said, she said" basis. "The AFP has undertaken a thorough evaluation of the matter which included interviewing Professor Triggs and other relevant parties. During that dialogue with Professor Triggs she stated she did not wish to make a complaint nor was she interested in pursuing the matter," the letter, dated May 22, said. "The evaluation did not identify evidence to support the allegation and consequently the AFP will not be taking any further action in relation to the matter."

In a statement from the Australian Human Rights Commission, it reiterated that the AFP had found "insufficient evidence available" to start an investigation into the matter. "The AHRC note that the evidence given in Senate estimate hearings is protected by parliamentary privilege and not available as evidence," the statement said. Mr Dreyfus said he accepted the outcome by the AFP. In choosing not to pursue this matter, she has demonstrated a professionalism and integrity sadly lacking in those who attacked her "I can understand that the president would want to put this matter behind her. In choosing not to pursue this matter, she has demonstrated a professionalism and integrity sadly lacking in those who attacked her," he said.

The Greens also referred the matter to the AFP and received a similar letter advising that the investigation would not proceed. Mr Moraitis confirmed in February that Professor Triggs was told a senior role would be available if she resigned after being told she no longer had the confidence of the Attorney-General. Mr Moraitis denied explicitly linking Professor Triggs' resignation to the job offer. He maintained he did not take the offer to be "an inducement" and did not use the word "resignation" during a meeting with Professor Triggs on February 3. But he conceded under questioning from Labor and Greens senators that "one would flow from the other", effectively confirming that the job offer was contingent upon Professor Triggs accepting that her position was untenable. Earlier this year the Abbott government accused Professor Triggs of bias after she announced her inquiry into children in detention under the Abbott government, and not during the six years Labor was in power.

Senator Brandis was censured by the Senate in March over his attacks on Professor Triggs. The commission will face Senate estimates on Thursday. Follow us on Twitter Like us on Facebook