“What the committee’s done here, they wanted to construct some things about Buswell and what they did is they took evidence to us and they manipulated that evidence... Police Commissioner Karl O'Callaghan continues to be critical of report into the Buswell investigation. “I’m a servant of government but I can tell you I’ve never been part of a committee that has been so biased and so geared towards a predetermined outcome as this. “They’ve made assumptions; they’ve only got a rudimentary understanding of police investigations and they’ve made some very, very brave statements with not one shred of evidence to back it up, including that there was some collusion between premier and cabinet and the police about for argument's sake the interview of Ms Turnseck [Buswell's chief-of-staff Rachael Turnseck]." Mr O'Callaghan said there was "a whole bundle of mistakes” in the report.

He described the committe as being split on the report, saying it was “a minority report that went with it, two of the committee abstained from the main report, said we don’t agree with this.” Mr O'Callaghan questioned how he should take recommendations into account if the committee could not even agree on it. He said the one relevant part of the report was a recommendation about the cross-referencing of computer systems, which may have allowed the situation to be dealt with better. While spealing with Radio 6RP, Mr O'Callaghan agreed there could have been some political motovation behind the way the report was constructed. "The way they did that is they tried to construct some sort of conspiracy between the police and government about going easy on this investigation and clearly there is no evidence of that," he said.

State opposition leader Mark McGowan told Radio 6PR that he didn’t agree with the Police Commissioner but he was “entitled to his view”. “The real issue here is what happened in relation to Mr Buswell and what sort of cover up took place in relation to the Premier’s office and for me, why wasn’t and why hasn’t Mr Buswell been charged with drink driving?” Mr McGowan said. “The police commissioner is trying to shoot the messenger. "We haven’t got to the bottom of it fully from that night and if we had got to the bottom of what happened that night, Mr Buswell and the Premier should be providing a full explanation in relation to all of the events, both that night and subsequently." Mr McGowan's fellow Labor MP Margaret Quirk, chaired the committee.

Premier Colin Barnett has since called for Ms Quirk to resign as chair of the committeee. Mr Buswell, who was Treasurer at the time, quit his cabinet position following revelations he had a mental breakdown after crashing into parked cars, a pole and the front gate of his Subiaco home, while returning from a wedding in the early hours of February 23. Follow WAtoday on Twitter