The Greens are urging the federal government to abandon plans to resettle refugees in Cambodia.
Immigration Minister Peter Dutton will soon head to Cambodia to further talks on a refugee resettlement after last year's signing of a $40 million deal between Australia and Cambodia.
The Cambodian government has now received in-principle agreement from the International Organisation for Migration to oversee the transfer of refugees from Nauru, ABC Online reports.
The ABC says the IOM observed meetings between officials from Nauru, Australia and Cambodia in Nauru last week.
Mr Dutton would not comment on any detail of the agreement on Tuesday, but told Sky News he would travel to Cambodia soon to continue the talks.
However, Greens leader Christine Milne says the resettlement in Cambodia, one of the least developed countries in the world, should not go ahead.
"We know that the money the Australian government spends in Cambodia will go straight into the back pockets of various people in the government, it's a highly corrupt country," she told reporters in Hobart.
Signing the deal last year, former immigration minister Scott Morrison said it was a long-term arrangement, which would begin with a few refugees who volunteered to go, and build over time.
Australia will provide support for housing, education and health and language training, and will deliver Cambodia $40 million in extra aid over the next four years.