The Office of the Auditor-General has been asked to investigate some of the findings included in an independent report into Whanganui's failed wastewater treatment plant.
Former mayor Michael Laws has written to the Auditor-General asking for an investigation into some areas of the report prepared by Robert Domm and released last week.
Mr Laws said the report's findings include the conclusion that senior managers at the district council misled or otherwise misrepresented the facts to their governance teams.
"This led directly to the estimated loss of $27 million of ratepayer monies," he said.
"This is about as scandalous an allegation as scandals in local government in New Zealand get: the impact of that sum upon the Whanganui community will have repercussions for decades to come."