The governor of the Reserve Bank of Australia, Glenn Stevens expressed that it may have been a sensible step to alert about an internal central bank probe into the note-printing scandal.

There are allegations against Mr Stevens and former RBA deputy governor Ric Battellino of corruption relating to the involvement of Note Printing Australia (NPA) and Securency International. The allegations are relating to the techniques used by the agents of the two firms, which are subsidiaries of the RBA to win note-printing contracts abroad.

Mr Stevens told the parliamentary hearing today that, "Were we to see that set of circumstances again, older and more scarred and wiser now, I think it might be prudent to still do that whole process."

He added, "But at the end say to the police 'we've done this, this is our conclusion and we're not proposing further action, but we're advising you just in case something comes up one day', or in case they've got any other suggestions to do."

There were concerns over the behavior of some agents in 2007 but the police was only alerted in 2009, after the publishing of allegations in a newspaper.