Administrative Review Board hearing

Detainees who were determined to have been properly classified as "enemy combatants" were scheduled to have their dossier reviewed at annual Administrative Review Board

Administrative Review Board

The Administrative Review Board is a United States military body that conducts an annual review of the suspects held by the United States in Camp Delta in the United States Navy base at Guantanamo Bay, Cuba....

 hearings. The Administrative Review Boards weren't authorized to review whether a detainee qualified for POW status, and they weren't authorized to review whether a detainee should have been classified as an "enemy combatant".

They were authorized to consider whether a detainee should continue to be detained by the United States, because they continued to pose a threat—or whether they could safely be repatriated to the custody of their home country, or whether they could be set free.

Hafizullah chose to participate in his Administrative Review Board hearing.

The following primary factors favor continued detention
The following primary factors favor release or transfer

Guantanamo Medical records

On 16 March 2007 the Department of Defense

United States Department of Defense

The United States Department of Defense is the U.S...

published medical records for the captives.
According to his records Hafizullah was 66 inches tall. He was only weighed three times, when he arrived at Guantanamo, in May 2003, and in June and July 2003. He weighed 140 pound, 140 pounds, and 140 pounds.

Repatriation

On November 25, 2009, the Department of Defense published a list of the dates captives were transferred from Guantanamo.
According to that list
Hafizullah
was transferred on December 15, 2006.