In August 2005, while incarcerated on the state sexual battery and extortion charges, Mystikal was charged federally with two misdemeanor counts of failing to file tax returns for 1998 and 1999. On January 12, 2006, he was convicted in federal court of the tax offenses, but was allowed to serve the one-year federal sentence concurrent with his six-year state sentence. Mystikal was incarcerated at Louisiana's Elayn Hunt Correctional Center. On January 19, 2006, Mystikal was denied parole at a parole board hearing. On January 11, 2007, Mystikal was released from custody on the federal misdemeanor tax convictions (as his one-year sentence had expired), but he remained in custody on the six-year sentence for the Louisiana state felony convictions. The news of his release caused confusion among fans who heard the news and mistakenly thought he had been released on parole. He was released January 14, 2010. After his release, Mystikal was registered as a sex offender.