Bangladesh has rejected a claim by Myanmar that a family of five Rohingya refugees were "repatriated", calling the claim "a farce, BBC reports.
Some 700,000 people from the Rohingya minority group have left Myanmar for Bangladesh, fleeing military violence.
Myanmar hailed the first people to return, but Bangladesh said the family had technically never left Myanmar.
They had never travelled beyond a border area between the countries, Bangladesh said.
The tightly-controlled border area is technically inside Myanmar's territory.
"By no definition can this be called repatriation. No repatriation has taken place," Bangladesh's refugee commissioner, Abul Kalam, told the Associated Press.
"Bangladesh is no way part of it," he said.