The American journalist convicted of spying in Iran has gone on a hunger strike to protest her imprisonment, her father said Saturday. Roxana Saberi, a 31-year-old dual American-Iranian citizen, was convicted of spying for the United States and sentenced to eight years in prison after a swift, closed door trial earlier this month. "She went on a hunger strike Tuesday to protest her imprisonment. Today is the fifth day," Reza Saberi told The Associated Press. "She will remain on hunger strike until she is freed." Saberi was arrested in late January and initially accused of working without press credentials, but earlier this month, an Iranian judge leveled the far more serious allegation of espionage.