A pause in prisoner transfers from Guantanamo Bay has ended with the arrival Saturday in Oman of six Yemenis long held at the U.S. prison for suspected terrorists.

It was the first movement of detainees out of Guantanamo in five months as Congress considers new restrictions on transfers.

The six men boarded a flight Friday from the U.S. facility in Cuba, and their transfer reduced Guantanamo’s population to 116. President Obama has now transferred more than half the 242 detainees who were at Guantanamo when he was sworn into office in 2009 after campaigning to close it.

But he is far from achieving that goal. With just a year and a half left in his second term, final transfer approvals are coming slowly from the Pentagon and lawmakers are threatening to make movement out even harder.

The transfers to Oman are the first to win final approval by Defense Secretary Ash Carter, who has been on the job four months.

The six include Emad Abdullah Hassan, who has been on hunger strikes since 2007 in protest of his confinement without charge since 2002.

In court filings protesting force-feeding, Hassan said detainees have been force-fed up to a gallon at a time of nutrients and water. The U.S. accuses him of being one of many bodyguards of Osama bin Laden.