Washington Warrant In Aid of Writ of Habeas Corpus is an order from the Washington State Supreme Court that directs a law enforcement officer to bring a person who is being held in custody to court for the purpose of determining the legality of the detention. This warrant is typically used when the person in custody has filed a petition for a writ of habeas corpus, which is a legal process that allows a person to challenge the legality of their detention in court. There are two types of Washington Warrant In Aid of Writ of Habeas Corpus, the Original Warrant and the Show Cause Warrant. The Original Warrant directs the officer to bring the person in custody to court, while the Show Cause Warrant requires the officer to give notice to the custodian of the person in custody and to the court of the time and place of the hearing.