WASHINGTON (AP) – The U.S. called Thursday for North Korea to grant amnesty and immediately release a Korean-American sentenced to 15 years’ hard labor for "hostile acts" against the state.

Kenneth Bae, 44, a Washington state man described by friends as a devout Christian and a tour operator, is at least the sixth American detained in North Korea since 2009. The others eventually were deported or released without serving out their terms, some after trips to Pyongyang by prominent Americans, including former presidents Bill Clinton and Jimmy Carter.