Iowa Code § 147.112: Investigation and report by law enforcement agency.

The law enforcement agency who has received any report required by this chapter and who has any reason to believe that the person injured was involved in the commission of any crime, either as perpetrator or victim, shall at once commence an investigation into the circumstances of the gunshot or stab wound or other serious injury and make a report of the investigation to the county attorney in whose jurisdiction the gunshot or stab wound or other serious injury occurred. Law enforcement personnel shall not divulge any information received under the provisions of this section and section 147.111 to any person other than a law enforcing officer, and then only in connection with the investigation of the alleged commission of a crime.