Four minors are facing a combined 42 weapons-related charges after a loaded .357 Magnum handgun was located inside an east-end school.

The three boys and one girl were arrested at Mother Teresa Catholic Secondary School Wednesday afternoon after officers responding to a Crime Stoppers tip found the gun inside a knapsack.

According to police, the suspects were handing around the bag to avoid detection.

The bag was eventually taken from the female suspect as she attempted to leave the school.

All four suspects appeared in court Thursday.

One of the suspects was charged with failure to comply with a recognizance in addition to the weapons-related charges.

One of the male suspects was additionally charged with carrying a concealed weapon after another weapon was seized by police.

Reached by Thursday, Const. Wendy Drummond would not identify the type of weapon but said it is not a gun.

Each of the four teens were charged with:

Possession of a Restricted Firearm with Ammunition

2. Possession of a Restricted Weapon Obtained by the Commission of an Offence

3. Altering, Defacing, or Removing Serial Number on a Firearm

4. Careless Use of a Firearm

5. Firearm Careless Storage

6. Unauthorized Possession of a Firearm

7. Possession of Unregistered Restricted Weapon

8. Possession of a Restricted Weapon Knowing its Possession is Unauthorized

9. Careless Storage Ammunition

10. Carry Concealed Weapon

The suspects cannot be identified under the terms of the Youth Criminal Justice Act.