 Within an hour of his release from state prison, however, Dioguardi was re-arrested on federal tax evasion charges.His tax evasion trial began in March 1960, he was found guilty a month later, and was sentenced to four years in federal prison.Although a United States court of appeals reversed his conviction and ordered him retried in July 1960, a United States district court found that he had filed his appeal too late and reinstated his conviction.