Wis. Stat. § 781.04: Habeas corpus.

(1) In an action or proceeding seeking the remedy available by habeas corpus, the court may admit the prisoner to bail in accordance with ch. 969.

(2) If the prisoner is detained upon any criminal accusation, no order for discharge may be made until sufficient notice of the time and place of the hearing on the application is given to the district attorney of the county in which the action or proceeding is pending.