MELBOURNE (Reuters) — Australia will not extradite an Iranian academic to the United States, Australia’s attorney-general said over the weekend, following a 13-month detention of the researcher for allegedly exporting American-made military equipment to Iran.

Attorney-General Christian Porter said in a statement that “in all the circumstances of this particular case” the academic, Reza Dehbashi Kivi, should not be extradited. Porter said:

My decision was made in accordance with the requirements of Australian domestic legal processes and is completely consistent with the powers provided to the commonwealth attorney-general under our law.

The statement came hours after Iran had agreed to free an Australian couple from a Tehran prison who were held on spying charges. Later on Saturday, Iranian media reported that Dehbashi Kivi had already returned to Iran.

Porter would not say whether the two cases were related.