Police say an Ontario teenager allegedly carrying a loaded handgun, ammunition and knives was arrested after making threats at his high school.

Ontario Provincial Police say no one was injured before the 15-year-old was arrested Tuesday afternoon without incident at the high school in Campbellford, a community east of Peterborough.

OPP spokesperson Const. James Clarke says the school was in lockdown for around 10 minutes before the arrest, shortly after 12 p.m.

Clarke says police are investigating…