A 16-year-old Brampton girl was arrested at her high school Monday and charged with encouraging her peers to bring weapons to school.

Peel Regional Police began investigating a social media post that told students at St. Edmund Campion Secondary School to bring weapons to the school June 5 to force a lockdown and disrupt classes.

“The post advised that no one is to be harmed and instead the intention was to invoke a lockdown at the school,” said a police news release.

Police were at the Brisdale Drive school Monday morning, working with staff at the school and with the Dufferin-Peel Catholic District School Board.