Mich. Comp. Laws § 800.283: Weapons; prohibitions.

Sec. 3.

Unless authorized by the chief administrator of the correctional facility, a weapon or other implement which may be used to injure a prisoner or other person, or in assisting a prisoner to escape from imprisonment, shall not be sold, given, or furnished, either directly or indirectly, to a prisoner who is in or on the correctional facility, or be disposed of in a manner or in a place that it may be secured by a prisoner who is in or on the correctional facility.

Unless authorized by the chief administrator of the correctional facility, a person, who knows or has reason to know that another person is a prisoner, shall not sell, give, or furnish, either directly or indirectly, to that prisoner anywhere outside of a correctional facility a weapon or other implement which may be used to injure a prisoner or other person or in assisting a prisoner to escape from imprisonment.

Unless authorized by the chief administrator of the correctional facility, a weapon or other implement which may be used to injure a prisoner or other person, or in assisting a prisoner to escape from imprisonment, shall not be brought into or onto any correctional facility.

Unless authorized by the chief administrator of the correctional facility, a prisoner shall not have in his or her possession or under his or her control a weapon or other implement which may be used to injure a prisoner or other person, or to assist a prisoner to escape from imprisonment.