The repatriation of Ridah Bin Saleh al-Yazidi means 26 detainees remain at the detention facility.

The camp is part of a US naval base complex in south-eastern Cuba.

According to the New York Times, Mr Yazidi was never charged and was approved for transfer more than a decade ago.

Human Rights Watch and Cage International said he had been at Guantanamo Bay since the facility was first set up in 2002.

According to Monday’s Pentagon statement, 26 detainees remain at Guantanamo Bay, of whom 14 are eligible for transfer.

Earlier in December, the Pentagon announced that the US had repatriated three other detainees, the Associated Press news agency reported.