Whenever the department is advised or has reason to believe that any person is violating any of the provisions of ss. 48.60, 48.62, 48.625 or 48.65, it shall make an investigation to determine the facts. For the purposes of this investigation, it shall have authority to inspect the premises where the violation is alleged to occur. If it finds that the person is violating any of the specified sections, it may either issue a license if the person is qualified or may institute a prosecution under s. 48.76.
Wis. Stat. § 48.74