Updated

A Michigan judge says he's learned a lesson about locking his car after a 16-year-old prisoner who escaped from a courthouse cell was found hiding in the vehicle's trunk.

The Macomb Daily reports the teen had vanished Friday after appearing in juvenile court in Mount Clemens on a probation violation.

Sheriff's deputies searched for about an hour until a security officer became suspicious when he saw a picture that had fallen to the ground outside judge's car.

A deputy checked the car and found the boy in the trunk.

Macomb County Circuit Judge Peter Maceroni says the teen likely used a button inside the unlocked car to open the trunk.

The judge says that from now on he will lock the car when he's at the courthouse.