Five Guantanamo Bay detainees were transferred to the United Arab Emirates, the US Department of Defense said on Sunday.
The names of the detainees have been identified by the Pentagon as Ali Ahmad Muhammad al-Razihi, Khalid Abd-al-Jabbar Muhammad Uthman al-Qadasi, Adil Said al-Hajj Ubayd al-Busays, Sulayman Awad Bin Uqayl al-Nahdi and Fahmi Salem Said al-Asani, all Yemeni citizens.
Media reports say they were classified as low-level detainees.
During his presidential campaign and throughout his term in office, US President Barack Obama has vowed several times to close the Guantanamo Bay prison.
The administration has increased efforts toward that end, transferring Guantanamo detainees to their home countries or to third countries.
However, by placing restrictions on prosecutions in federal courts, detention in US and transfers to foreign countries, the Republican controlled Congress is stalling the closing of the facility.
Over 100 men, more than dozens of whom are cleared for release, are still being held in Guantanamo.
The only mechanism through which the cases of detainees are reviewed is military courts and periodic review boards.
It would take years to process all of the detainee cases through this system due to the slow pace of current review mechanism.
The Guantanamo Bay Detention Camp started to be used as a military prison in 2002 under the presidency of George W. Bush the 9/11 attacks, with the aim to hold prisoners from around the globe accused of engaging in terrorism or militant activity.