Mo. Rev. Stat. § 58.370: Death by felony — duty of coroner.

The coroner, upon an inquisition found before him of the death of any person by the felony of another, shall speedily inform one or more associate circuit judges of the proper county, or some judge or justice of some court of record, and it shall be the duty of such officer forthwith to issue his process for the apprehension and securing for trial of such person.