Iowa Code § 359.39: Ex officio police officers.

Upon the taking of such oath, such watchpersons, sextons, superintendents, gardeners, and agents shall have and exercise all powers of police officers within and adjacent to the cemetery grounds and each shall have power to arrest any and all persons engaged in violating the laws of this state, and to bring such person so offending before any judicial magistrate, to be dealt with according to law.