The former head of the Australian Border Force has blasted the investigation that led to his sacking and called a former Coalition minister a hypocrite for failing to stick up for him.
Roman Quaedvlieg lost his job five months ago after a drawn-out investigation into claims he improperly helped his girlfriend get a job and failed to disclose their relationship.
Mr Quaedvlieg, who was previously the ACT's police chief, has always denied the allegations and was known to be displeased by how the investigation was managed.
On Friday, he attacked former employment minister Eric Abetz's decision to defend former public service commissioner John Lloyd, who was also found to have engaged in misconduct.
The Canberra Times reported on Wednesday, Mr Lloyd's last day in his job, that an inquiry had found he breached the public service's code of conduct by sharing information and partisan emails with a right-wing thinktank, the Institute of Public Affairs, of which he was a member.
Senator Abetz denounced the investigation of Mr Lloyd as farcical and biased, and said the leaking of its findings exposed "a lack of integrity". He said the leaking was "ironically ... far more serious that any confected findings" and demanded an immediate investigation.
The former Border Force commissioner responded strongly on Twitter, saying the senator was silent when similar problems beset his investigation.
"Abetz screams for an investigation into how [Merit Protection Commissioner Linda] Waugh’s report into Lloyd was 'reprehensibly' leaked, excoriates the process as a farce and lacking procedural fairness," he wrote.
"But chronic leaking of details of my matter to the media, including my sacking before I was even told, draws no whisper?"
Mr Quaedvlieg said confidential details of allegations against him were leaked multiple times while he was under investigation.
"Every single one I either had to refer to the AFP privately, or coerce/urge/cajole them to be referred by those that held the information. The inconsistency and hypocrisy is breathtaking," he wrote.
"Repeated complaints of a lack of procedural fairness and flaws in the investigative process [were] also completely ignored or arbitrarily rejected.
"Sorry, Senator Abetz, but defending Lloyd on process (irrespective of the substance of the issue) is hypocritical when you were silent on mine."
However, Senator Abetz pointed out on Friday he had never been Mr Quaedvlieg's minister.
"I was the minister responsible for the Public Service Commission when the alleged conduct happened involving Mr Lloyd and therefore made submissions to the Merit Protection Commissioner and public statements relating to my personal and specific knowledge of the matter."