Police have charged one person with possession of a weapon after a lockdown at Miller Collegiate on Friday afternoon.
Police add two others were released without charges.
Police say they responded to a report Friday that two students were being chased by two or three suspects who were threatening to assault them with bear mace, and that they may have entered Miller High School.
That forced the school into a lockdown, and neighbouring schools to increase their security levels.
They say no one was injured.
