Maple Ridge Secondary School has been placed under hold and secure as police investigate a possible robbery at the school.
Shortly before 10:45 a.m., Barrie Police posted on X that two youths had been arrested and a firearm was seized in relation to the incident. About an hour later, they said a third youth had been arrested.
Police say they are not looking for any other suspects but residents might notice a heightened police presence in the area of the school while they investigate.
No injuries were reported and police say there is no concern for public safety.
