KALAMAZOO TOWNSHIP, MI -- An 18-year-old Kalamazoo Central High School student threatened to "shoot up the school" during an online argument and now faces a terrorism charge, police said.

Kalamazoo County prosecutors on Friday, Sept. 21 authorized charges of making a terrorism threat and using a computer to commit a crime against the teen.

Kalamazoo Township police began investigating after they received an anonymous tip late Sept. 19 about a Facebook post. The post was threatening a shooting at Kalamazoo Central High School.

Police investigated and learned the threat was made during an online argument. They determined the person who made the post had no means to carry out the threat.

The teen was arrested Friday and taken to the Kalamazoo County Jail. Police have not released his name pending his arraignment.

Kalamazoo Public Schools administrators suspended the student Thursday.