Michigan Compiled Laws, Chapter 800. Prisons § 800.284

Sec. 4. The chief administrator of a correctional facility may search, or have searched, any person coming to the correctional facility as a visitor, or in any other capacity, who is suspected of having any weapon or other implement which may be used to injure a prisoner or other person or in assisting a prisoner to escape from imprisonment, or any alcoholic liquor, prescription drug, poison, or controlled substance upon his or her person.