Here's the Pentagon's accouncement:
The Department of Defense announced today the transfer of 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 from the detention facility at Guantanamo Bay to the Government of the United Arab Emirates.
As directed by the president's Jan. 22, 2009, executive order, the interagency Guantanamo Review Task Force conducted a comprehensive review of these cases. As a result of those reviews, which examined a number of factors, including security issues, al-Qadasi, al-Busays, al-Nahdi, and al-Asani were unanimously approved for transfer by the six departments and agencies comprising the task force.
On April 23, 2014, the Periodic Review Board consisting of representatives from the Departments of Defense, Homeland Security, Justice, and State; the Joint Chiefs of Staff, and the Office of the Director of National Intelligence determined continued law of war detention of al-Razihi does not remain necessary to protect against a continuing significant threat to the security of the United States. As a result of that review, which examined a number of factors, including security issues, al-Razihi was recommended for transfer by consensus of the six departments and agencies comprising the Periodic Review Board. The Periodic Review Board process was established by the president's March 7, 2011 Executive Order 13567.
In accordance with statutory requirements, Secretary Carter informed the Congress of the United States' intent to transfer these individuals and his determination that these transfers meet the statutory standard.
The United States is grateful to the Government of the United Arab Emirates for its willingness to support ongoing U.S. efforts to close the Guantanamo Bay detention facility. The United States coordinated with the Government of the United Arab Emirates to ensure these transfers took place consistent with appropriate security and humane treatment measures.
Today, 107 detainees remain at Guantanamo Bay.
The New York Times reports that: "As many as 17 other proposed transfers of lower-level detainees are in the bureaucratic pipeline, an official familiar with internal deliberations said."