Cambodia says an Iranian couple who were resettled in Cambodia under an expensive program funded by Australia to keep asylum-seekers from its soil have returned to their homeland.

Gen. Tan Sovichea, head of the refugee office of the Interior Ministry's immigration department, said Tuesday that the couple, who arrived from a refugee camp on the South Pacific island nation of Nauru last June, departed for Iran on Feb. 12.

He said five people had resettled in Cambodia from Nauru under a four-year, 55 million Australian dollar ($41 million) program financed by Australia, which also pays for the South Pacific camp housing more than 600 refugees.

Last October, one of two ethnic Rohingya men resettled under the deal went home to Myanmar, leaving only an Iranian and another Rohingya in Cambodia.