Bangladesh and Myanmar have agreed to complete within two years the return of hundreds of thousands of Rohingya Muslims who fled an army crackdown last year in Myanmar.
Statements from the Myanmar and Bangladesh foreign ministries said Bangladesh would set up five transit camps on its side of the border.
Those camps would send Rohingyas to two reception centres in Myanmar. The repatriation process would start next Tuesday, the statements said.
Myanmar said it would build a transit camp that can house 30,000 returnees.
The Bangladesh statement said: "Myanmar has reiterated its commitment to stop (the) outflow of Myanmar residents to Bangladesh."
United Nations Secretary-General Antonio Guterres and the UN Refugee Agency (UNHCR) said they were concerned about forcibly repatriating over 650,000 Rohingya.
"A huge effort of reconciliation is needed to allow it to take place properly," Guterres said.
"The worst would be to move these people from camps in Bangladesh to camps in Myanmar, keeping an artificial situation for a long time and not allowing for them to regain their normal lives."
Myanmar stressed the need for both sides to take preventive measures against possible Rohingya attacks and said it gave Dhaka a list with the names of 1,000 alleged militants.
The crisis erupted after Rohingya insurgent attacks on security posts on August 25 in Rakhine triggered a fierce military response that the United Nations denounced as ethnic cleansing, with around 650,000 people fleeing the violence.
The military denies ethnic cleansing, saying its security forces mounted legitimate counter-insurgency clearance operations.
A UNHCR spokesman said on Tuesday the Rohingya should return voluntarily only when they feel it is safe to do so.
