Police have detained the man suspected of killing journalist Hrant Dink in Turkey, Istanbul Gov. Muammer Guler announced Saturday. The suspect, identified by police as Ogun Samast, was caught on a bus in the Black Sea city of Samsun after a tip-off from his father, Guler said. He apparently was returning from Istanbul to his home town of Trabzon. The arrest comes just 32 hours after Dink, an ethnic Armenian and editor of the bilingual Turkish-Armenian newspaper Agos, was killed by a gunman outside his office in Istanbul, provoking shock and embarrassment at home and outrage abroad. Guler said police were investigating whether the suspect acted alone or had ties to a group.