The Biden administration has transferred 11 Guantanamo detainees to Oman for resettlement.

On Monday, the Biden administration transferred 11 Yemeni detainees from a U.S. naval base in Guantánamo Bay to Oman, which has agreed to assist in their resettlement, as part of efforts to decrease the population at the contentious military facility.

The New York Times reported that all the men were captured following the Sept. 11, 2001, attacks and were held for over two decades without being charged or put on trial.

The Defense Department expressed gratitude to the Oman government and other partners for supporting U.S. efforts to reduce the detainee population and close the Guantanamo Bay facility.

Planet Chronicle Digital has reached out to the White House.

The 11 detainees were identified as: Uthman Abd al-Rahim Muhammad Uthman, Moath Hamza Ahmed al-Alwi, Khalid Ahmed Qassim, Suhayl Abdul Anam al Sharabi, Hani Saleh Rashid Abdullah, Tawfiq Nasir Awad Al-Bihani, Omar Mohammed Ali al-Rammah, Sanad Ali Yislam Al Kazimi, Hassan Muhammad Ali Bib Attash, Sharqawi Abdu Ali Al Hajj, and Abd Al-Salam Al-Hilah.

The transfer of the most notorious prisoner at Guantanamo, Khalid Shaikh Mohammed, was carried out as part of a secret operation on Monday, days before he was scheduled to plead guilty to plotting the Sept. 11, 2001 attacks. The move had been planned for three years after an initial plan to conduct the transfer in October 2023 faced opposition from congressional lawmakers.

The reason for delivering detainees to Oman, a reliable ally in the Middle East, was not disclosed by authorities, nor was the benefit received by the host country.

At Guantanamo, Shaqawi al Hajj, one of the men in the latest transfer, had repeatedly gone on hunger strikes and required hospitalization to protest his 21 years of imprisonment.

The number of men detained at Guantanamo has decreased to 15, the lowest since 2002, when it was transformed into a detention center for individuals from around the world who were arrested in connection with the "War on Terror."

Six uncharged men remain in Guantanamo, two convicted inmates are still there, and seven others are charged with various terrorist attacks, including the 2001 attacks, the 2000 bombing of the USS Cole, and the 2002 bombings in Bali.

The majority of individuals held at Guantanamo are from Yemen, a nation devastated by conflict and currently under the control of the Iran-supported Houthi rebels.

The Associated Press contributed to this report.