U.S. Secretary of Defense Ash Carter says 10 prisoners at the detention center at Guantanamo Bay, Cuba have been released and sent to Oman for resettlement.
The move puts the prison population below 100 for the first time since it opened in January 2002. There are now 93 prisoners left.
Speaking at a change of command ceremony at U.S. Southern Command in Miami on January 14, Carter said the 10 were transferred after a thorough security review.
He said government officials intend to transfer all the detainees they can and work with Congress to find a secure location in the United States to hold the rest.
U.S. officials say the releases reflect progress toward President Barack Obama's goal of closing the prison.
Guantanamo at its peak in 2003 held nearly 680 prisoners.