Mo. Rev. Stat. § 58.310
As soon as the jury shall be sworn, the coroner shall give them a charge, upon their oaths, to declare of the death of the person, whether he or she died by felony or accident; and if of felony, who were the principals and who were accessories, and if the act was justified, and all the material circumstances relating thereto; and if by accident, whether by the act of man, and the manner thereof, and who was present, and who was the finder of the body, and whether he or she was killed in the same place where the body was found, and, if elsewhere, by whom, and how the body was brought there, and all other circumstances relating to the death; and if he or she died of his or her own act, then the manner and means thereof, and the circumstances relating thereto.
§ 58.310, RSMo