A "repentant" American missionary set to be freed from North Korea after being arrested at the border on Christmas said he was ashamed of the "biased" view he once held of the communist nation, Pyongyang's state media said Friday. Breaking its silence about Robert Park's fate, North Korea announced Friday that the American would be released from custody after admitting to entering the country illegally and showing "sincere repentance" for the transgression. Park, 28, slipped across the frozen Tumen River from China into North Korea carrying letters calling on leader Kim Jong Il to close the country's notoriously brutal prison camps and to step down from power — acts that could risk a death sentence in the totalitarian nation.