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Parents attended a meeting at Marsh Elementary School today after a student was arrested for bringing an unloaded gun and ammunition to school.

One parent leaving the meeting called it a “hot mess.” Each parent was given just two minutes to speak.

Many parents were upset that they were not immediately told about the arrest Wednesday of a 13-year-old student.

Police say a .22 revolver and 33 bullets were discovered inside the locker of the student on Wednesday. A three-inch pocket knife was also in the student’s pocket.

The gun may belong to a relative of the child.

The teen appeared in Juvenile Court and was charged with unlawful use of a weapon.

Chicago Public Schools sent a letter home to parents saying: “We are working together with these departments in reviewing and modifying our security plan to maximize our existing resources and in identifying any needs to ensure a safe educational environment for our students.”

Marsh Elementary School does have metal detectors but the devices are primarily used for parents and visitors to pass through. That policy is now under review.

The teenager has since been released to the custody of his mother.

The 13-year-old boy goes to court next month.