Whenever any court of record, or any judge thereof, shall have evidence from any judicial proceedings had before such court or judge that any person is illegally confined or restrained of liberty within the jurisdiction of such court or judge, it shall be the duty of the court or judge to issue a writ of habeas corpus for the person’s relief, although no petition be presented for such writ.
Rule 91.06.Writ Shall Issue Without Petition--When.
Part III · Rule 91: Habeas Corpus · Last amended January 1, 1994 · Last verified July 22, 2026
In one sentenceRule 91.06 requires a court or judge that learns from its own judicial proceedings of a person’s illegal confinement to issue a writ of habeas corpus for that person’s relief, even without any petition being filed.
Full Text of Rule 91.06
Amendment History
Adopted June 24, 1982, eff. Jan. 1, 1983; Amended Sept. 28, 1993, eff. Jan. 1, 1994.
Official Comment
This is substantially the same as prior Rule 91.05.
Plain-English Summary
Rule 91.06 covers a situation that does not begin with a petition at all. If a court of record, or a judge of that court, becomes aware through proceedings already before it that someone is illegally confined or restrained within its jurisdiction, the rule imposes a duty to act. The court or judge must issue a writ of habeas corpus for that person’s relief on its own initiative.
This provision reflects the idea that habeas corpus protects against illegal restraint regardless of how the court comes to learn of it. If evidence surfaces in an unrelated case, or in some other proceeding before the court, showing that a person is being held unlawfully, the court cannot set that knowledge aside for lack of a formal request. The rule makes the writ mandatory once that evidence exists, without waiting for the restrained person or anyone else to file a petition.
Frequently Asked Questions
Does a habeas corpus writ always require a petition?
No. Under Rule 91.06, a court or judge that learns of illegal confinement through its own judicial proceedings must issue the writ even without a petition.
What triggers a court’s duty to issue the writ on its own?
Evidence from judicial proceedings already before the court or judge showing that a person is illegally confined or restrained within the court’s jurisdiction.
Is issuing the writ discretionary in that situation?
No. The rule states it is the duty of the court or judge to issue the writ once that evidence exists.
Does the restrained person need to ask for the writ?
No, the rule expressly applies although no petition be presented for the writ.
Where must the evidence of illegal confinement come from?
From judicial proceedings had before the court or judge, meaning matters already in front of that court or judge.
Source & verification. Rule text and amendment history are
reproduced verbatim from the Missouri State & Federal Court Rules, adopted by the
Supreme Court of Missouri. Last verified July 22, 2026. ·
Official source
Also known as: writ issued without petitioncourt initiated habeas corpussua sponte habeas relief Missourimandatory writ duty judge