Britain says the U.S. government has decided to release Shaker Aamer, the last U.K. resident imprisoned at Guantanamo Bay.

The Foreign Office says President Barack Obama has told Congress of his decision, and Amer will be returned to Britain once a 30-day notice period has expired.

The Foreign Office said in a statement Friday that it supported Obama's commitment to closing the detention facility in Cuba for terrorist suspects.

Aamer, originally from Saudi Arabia, was detained in Afghanistan in 2001 and has been held at Guantanamo since 2002. He has not been charged.