The Reserve Bank of Australia is hit with a new controversy when its currency firm is linked to bribery with foreign officials and offers of prostitutes to gain banknote printing deals.

Securency International in Melbourne is under scrutiny by the Australian Federal Police as it faces charges on bribing foreign government officials with multi-million dollar commissions to middlement in order to win a bid on banknote printing deals.

An AFP witness, who is a former Securency employee, revealed to the local media that he was tasked by his senior manager to arrange an Asian prostitute for the visiting official from foreign central bank in Melbourne.

The witness have failed to arrange the request, but suggests that other employees may have fulfilled the request for central bank officials.

The witness also learned that a middleman hired by Securency have intentions to bribe a central bank governor from an Asian country.

Securency International is a joint venture between the RBA and British firm Innovia Films. The company produces polymer material to print money in Australia and 26 other nations including Hong Kong, Indonesia, Brazil, China, New Zealand, and Sri Lanka.

Media reports have stated that two of Securency's top executives resigned the same day the controversial audit was released.

The reports have stated the banknote company were paying almost $50 million in commissions to an international network of agents since 2003.

Several countries such as Malaysia and Nigeria have called on the Federal Government to solve the matter on the allegations of bribery and corruption within Securency.