Michigan Compiled Laws, Chapter 330. Mental Health Code § 330.1408

Sec. 408. (1) An individual is subject to being returned to a hospital if both of the following circumstances exist:

(2) The hospital director may notify a peace officer or a security transport officer that an individual is subject to being returned to the hospital. Upon notification by the hospital director, a peace officer must take the individual into protective custody. After the individual is taken into protective custody, a police officer or security transport officer must transport the individual to a hospital.

(3) An opportunity for appeal, and notice of that opportunity, must be provided to an individual who objects to being returned from any authorized leave in excess of 10 days.