Wisconsin Statutes Criminal Procedure (Ch. 967 to 980) § 979.04. Inquests: when called

(1) If the district attorney has notice of the death of any person and there is reason to believe from the circumstances surrounding the death that felony murder, first-degree or 2nd-degree intentional homicide, first-degree or 2nd-degree reckless homicide, homicide by negligent handling of dangerous weapon, explosives or fire, homicide by negligent operation of vehicle, homicide resulting from negligent control of a vicious animal or homicide by intoxicated user of a vehicle or firearm may have been committed, or that death may have been due to suicide or unexplained or suspicious circumstances, the district attorney may order that an inquest be conducted for the purpose of inquiring how the person died. The district attorney shall appear in any such inquest representing the state in presenting all evidence which may be relevant or material to the inquiry of the inquest. The inquest may be held in any county in this state in which venue would lie for the trial of any offense charged as the result of or involving the death. An inquest may only be ordered by the district attorney under this subsection or by the circuit judge under sub. (2).

(2) If the coroner or medical examiner has knowledge of the death of any person in the manner described under sub. (1), he or she shall immediately notify the district attorney. The notification shall include information concerning the circumstances surrounding the death. The coroner or medical examiner may request the district attorney to order an inquest under sub. (1). If the district attorney refuses to order the inquest, a coroner or medical examiner may petition the circuit court to order an inquest. The court may issue the order if it finds that the district attorney has abused his or her discretion in not ordering an inquest.

(3) Subsequent to receipt of notice of the death, the district attorney may request the coroner or medical examiner to conduct a preliminary investigation and report back to the district attorney. The district attorney may determine the scope of the preliminary investigation. This subsection does not limit or prevent any other investigation into the death by any law enforcement agency with jurisdiction over the investigation.