The Writ of Habeas Corpus demands that requires a prisoner must go before the court to determine if there is lawful authority to detain the prisoner. Our Phoenix post-conviction relief lawyer assists Arizona defendants in filing for a writ of habeas corpus.You can file a habeas petition if you believe that your detention violates the law. This Chapter explains an important right—the writ of habeas corpus. The Memorandum is to provide legal support for your Petition for a Writ of Habeas Corpus and provides required personal information in addition to the form. To obtain a writ of habeas corpus, you must show the court that you are in custody in violation of the Constitution or laws of the United States. Previous Habeas Corpus or Special Action Proceedings in the Courts of Arizona? A Writ of Habeas Corpus is a motion which is filed most frequently to ensure that a Defendant's imprisonment or detention is not illegal. File your petition in the Phoenix Division. Petitioner's Petition for Review from the denial of PCR is pending before the Arizona Court of Appeals.