Two complaints laid by Auckland councillors over the release of reports into the feasibility of a downtown stadium will be formally investigated by the chief Ombudsman.
Chief Ombudsman Peter Boshier said the complaints relate to the council's decision to impose conditions on the release of the reports to councillors.
Mr Boshier said the first stage of his investigation had started.
He has written to the chief executive of Auckland Council and been notified after the complainants.
He is unable to comment further, as he is required by law to treat all evidence as confidential and all enquiries secret.
However, Mr Boshier said he wanted to complete his investigation as soon as possible, given the high public interest in this case.
Yesterday, nine councillors signed a letter to Auckland mayor Phil Goff after what they described as "strong dissatisfaction" with the way he handled the $900,000 report on the stadium.