Negotiations between Nauru and the Australian government over a visa fee for an Iraqi refugee held on Nauru, are in their third month.
The Iraqi man, Mohammed Sagar, was sent to Nauru by Australia more than five years ago, because he was deemed a national security risk.
The Nauru government has decided to charge Australia a monthly visa fee for Mr Sagar, believed to be about 75 000 US dollars a month, but Canberra has ignored the decision.
An Australian immigration official says the matter is still being discussed between the two governments, but would not elaborate on it further.
The official repeated it is Nauru's sovereign right to charge a visa fee.