Police, the corporate regulator, creditors and the administrator are all being blamed for allowing Michael Gu, founder of collapsed property group iProsperity, to skip the country despite well-publicised claims of fraud totalling about $180 million.

As the finger-pointing and recriminations about Mr Gu fleeing to the US continued on Wednesday, it has emerged that NSW Police has opened a fraud investigation into the Lamborghini-driving former mobile phone salesman.