Cambodia's Interior Ministry says only one refugee from Nauru remains in the country after resettling there under a deal with Australia.
The Khmer Times reported ministry spokesperson Khieu Sopheak saying since the deal was struck in 2014 only several refugees decided to come.
General Sopheak said the deal to resettle refugees detained by Australia on Nauru comes to an end in August.
He said Cambodia's government would review the deal and consider extending it at the request of Australia.
The agreement was criticised by rights groups who said Cambodia had a weak record of protecting refugees and resettling migrants.
They also accused Australia of failing to meet its international obligations, by deporting asylum seekers.