A brother of the NSW premier has been accused of failing to co-operate with a Greens-led parliamentary inquiry again as hearings commence with a sparse list of witnesses.
Jean-Claude Perrottet, the 26-year-old brother of premier Dominic Perrottet, was among several Liberal-aligned witnesses summonsed to appear before an inquiry starting on Wednesday.
The inquiry is examining matters raised under parliamentary privilege by Liberal MP Ray Williams in June alleging several senior members of his party were paid to install new councillors who would be friendly to high-flying Sydney developer Jean Nassif.
Councillor Virginia Ellis, Christian Ellis and Jean-Claude Perrottet, the NSW Young Liberals secretary, were among witnesses summonsed to appear on Wednesday and Thursday.
"Parliamentary staff have ... made multiple attempts to personally serve the summons on these individuals but have been unsuccessful," inquiry chair Sue Higginson said late on Tuesday.
"As none of these witnesses has come forward, I can only reach the conclusion that they are making a deliberate decision to avoid appearing before the committee."
She also claimed the "failure to co-operate" with the committee demonstrated "a blatant disregard of parliamentary process".
Ms Ellis and Mr Perrottet have been contacted for comment.
Another of the premier's brothers, BP manager Charles Perrottet, was also summonsed but might not be in NSW.
Requests were also made of Transport Minister David Elliott and Mr Williams but summonses were not issued when they advised they could not attend due to prior commitments.
Hills Shire Council general manager Michael Edgar, a former mayor and one other person are the only witnesses listed to appear at the two-day hearing.
Mr Nassif has attacked the inquiry as "political kabuki".
He says he left on a pre-planned trip to a remote part of Lebanon before the inquiry was called and has so far declined to appear via video link for legal reasons.
"The allegations are not serious because it is not credible," he said in a letter to the inquiry.
The six-member parliamentary inquiry is made up of two Labor MPs, two coalition MPs, Animal Justice's Mark Pearson and Ms Higginson.
