More than 200 people are being detained at the camp
US President Barack Obama has for the first time admitted that the US will miss the January 2010 deadline he set for closing the Guantanamo Bay prison.
Mr Obama made the admission in interviews with US TV networks during his tour of Asia.
He said he was “not disappointed” that the deadline had slipped, saying he “knew this was going to be hard”.
Officials are trying to determine what to do with some 215 detainees still held at the US prison in Cuba.
Mr Obama’s announcement follows considerable speculation that the deadline would slip, as the administration wrestles with how to deal with those inmates who cannot either be freed or tried in US court
He did not set a specific new deadline for closing the camp, but said it would probably be later in 2010.
“We had a specific deadline that was missed,” he told NBC.
And he told Fox News: “It’s hard not only because of the politics. People, I think understandably, are fearful after a lot of years where they were told that Guantanamo was critical to keep terrorists out.”
Closing the facility was “also just technically hard”, he added, and depended on co-operation from Congress.
Moving to close Guantanamo was one of Mr Obama’s first acts in office.