PKR-linked NGO National Oversight and Whistleblowers (NOW) is asking the government to come clean on whether Mara's purchase of three other properties in Australia also involved kickbacks.

This comes after Australian-based newspaper The Age alleged that Mara, a government agency, purchased an apartment block dubbed "The Dudley" in Melbourne at an inflated price, the excess of which was channeled back to Mara officials as kickbacks.

"If the allegation of corruption in the purchase of The Dudley has basis, the prime minister must instruct a full and holistic investigation of other property purchases which involved hundreds of million of ringgit in public funds," said NOW directors Rafizi Ramli and Akmal Nasir in a joint press statement today.

Rafizi is Pandan MP and PKR vice president while Akmal is PKR Youth strategy director.

The duo zoomed in on the three other purchases made by Mara using shelf companies based in tax-havens, which was also reported by The Age.

The properties were located at 746 Swanston Street, 51 Queen Street and 333 Exhibition Street in Melbourne.

"Is it true that the total of four property purchases cost a total of RM244.47 million and were all the transactions at a reasonable or inflated price?" they asked.

The Age estimated the property on Swanston Street was worth A$23.5 million while the properties on Queens Street and Exhibition Street were worth a combined A$40 million.

Rafizi and Akmal also questioned why Mara have companies based in tax-havens such as the British Virgin Islands in the case of the purchase of The Dudley.

Yesterday, The Age alleged Mara spent A$22.5 million (RM65 million) in public funds to purchase The Dudley in Melbourne.

The purchase, which among others involved a former politician, was overpriced by A$4.75 million (RM13.7 million).

It alleged the extra RM13.7 million paid was laundered out of Australia and paid as bribes to the Malaysian officials responsible for the purchase.