A secret report by Ernst & Young into credit card use at Murdoch University has revealed its four most senior academics racked up almost AU$1 million (US$753,000) in expenses in two years. Murdoch refused to release the document until The Australian won an appeal to the West Australian Information Commissioner, arguing that the report was in the public interest as it involved the use of taxpayers’ funds. The revelations come after Western Australia’s Corruption and Crime Commission last year described Murdoch’s financial controls over corporate credit cards as “lax” and found that the parameters of card usage were “extremely broad”.