An arrest has been made after threats caused Kalamazoo Public Schools to increase security Friday, Oct. 7.

On Thursday, police received a tip about a social media threat of violence to Loy Norrix and Kalamazoo Central High Schools. Police worked through the night to uncover the person responsible.

Around 6 a.m. Friday, investigators arrested a 17-year-old Loy Norrix student. Police are not actively searching for any other suspects as they believe the teen acted alone.

The incident remains under investigation. If you have any information, please call the Kalamazoo Department of Public Safety at 269-337-8139 or Silent Observer at 269-343-2100.