The Arizona Prisoner Form — Petition for Writ of Habeas Corpus by a Person in Federal Custody Pursuant to 28 U.S.C. 2241 is a legal document that must be filed by a person who is in federal custody in Arizona. It is used to seek relief from a court on the grounds that the person’s detention is unlawful. This form is also known as a habeas corpus petition because it requests a court order to release the petitioner from custody. There are two types of Arizona Prisoner Form — Petition for Writ of Habeas Corpus: one for persons in federal custody and one for persons in state custody. The federal version is used for individuals who are in federal custody in Arizona, such as those held in a federal prison, a military prison, or a detention center. It includes information about the petitioner, the grounds for the petition, and any supporting evidence. The form must be filed with the clerk of the court and served on the respondent.