Extra security is in force at a north Fulton County middle school Tuesday after a student made  “threats of violence” to other students over the weekend, a school district spokeswoman said.

The student at Northwestern Middle School in Milton faces criminal charges and disciplinary action by Fulton County Schools, spokeswoman Donna Lowry said.

Authorities contacted the parents of the student, who will not be allowed on campus, Lowry said.

Principal Charles Chester sent a letter to parents.

“I am writing you to inform you that we received information that a student has shared disturbing and threatening comments to students and possibly on social media,” the letter read in part. “Upon receiving this information, we immediately began to investigate the situation.

“We determined the source of the comments and have been in contact with the student’s parents. Because of the nature of the disruption, the student will not be allowed on campus.

“We are following our district’s safety and security protocols to assure that NMS remains safe. Students and staff will not be placed in danger. The safety and security of our campus is our No. 1 priority.”

A similar situation was reported at St. Pius X in Chamblee. Police spokesman Ernesto Ford said students were never sent home or taken out of class. Police are in the area only as a precaution.

In other news:

He is expected to appear in court Tuesday.