Dunedin City Council has appointed auditors to review the costs of Otago Stadium after finding discrepancies it says could be mis-spending or cost over-runs of millions of dollars.
Mayor Dave Cull and the council's chief executive made the announcement on Friday morning.
The council has ruled out any criminal wrongdoing in the controversial $200 million project, but says it is uncomfortable with answers it has received about the accounts and has appointed PricewaterhouseCoopers to review the project.
The mayor said he did not know how much the over-run was, but indicated it was likely to be millions of dollars.
The stadium in Dunedin opened in August last year in time to host Rugby World Cup matches.
Malcolm Farry, who led the stadium's construction says any accounting problems are not his doing.
Mr Farry, the chairperson of the Carisbrook Stadium Trust, says he is adamant that every report written has shown the trust's part - worth $165 million - came in under or on budget.
Mr Farry says any accounting problems must be with another party or the council.
He says two of the project's other parties, Dunedin Venues and the University of Otago, say they will cooperate fully with the audit.
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