After more than five-and-a-half years behind bars, Palestinian professor and activist, Sami Al-Arian, has been released from prison. Immigration authorities released him on bail on Tuesday after they failed to explain his continued detention pending a trial for refusing to testify before a grand jury about a cluster of Muslim organizations in northern Virginia. Al-Arian has been in prison since February 2003, when federal prosecutors charged him with being involved in the group Palestinian Islamic Jihad. A Florida jury failed to return a single guilty verdict on any of the seventeen charges brought against him. Four of his five children met him at the prison in Fairfax, Virginia yesterday afternoon. They were reunited for the first time in more than 2,000 days. But while he is out of prison, Sami Al-Arian is not free. He must remain under house detention pending trial.