The chair of a parliamentary committee examining a NSW police bugging scandal has accused Attorney-General Brad Hazzard of trying to "cajole", "threaten" and "bribe" him into not conducting the inquiry and referred him to the corruption watchdog.

Shooters and Fishers MP Robert Borsak made the sensational accusations under parliamentary privilege on the opening day of the inquiry's hearings, which is examining NSW Ombudsman Bruce Barbour's two-year probe of the bugging scandal, which has at its heart a 2003 internal police inquiry codenamed Strike Force Emblems.

Attorney-General Brad Hazzard: "Mr Borsak seemed to have no understanding whatsoever of the necessity to be impartial" Credit: Dean Osland

It involves some of the state's top police including commissioner Andrew Scipione and deputies Nick Kaldas and Catherine Burn.

The parliamentary inquiry was established last year against the wishes of the NSW government.