CONCORD — A 13-year-old student is undergoing mental health evaluation after pulling a knife on a teacher Friday at Northwest Cabarrus Middle School.

The teen faces felony charges of bringing a firearm onto school grounds and assault on a school official.

According to the Cabarrus County Sheriff’s Office, the student took a knife from her backpack while in class Friday morning and threatened her teacher.

Another staff member subdued the student, and the knife was secured. The school resource officer, Deputy Brian Heintz of the Cabarrus County Sheriff’s Office, entered the classroom within seconds, and the student was secured.

Heintz found an unloaded .25-caliber handgun and ammunition in the student’s backpack and seized it. Detectives later searched the girl’s home and seized three shotguns and three handguns. Her parents were charged with misdemeanor failure to secure a firearm to protect a minor, a Sheriff’s Office news release said.

Students in the class were safeguarded during the incident and no one was injured, the release said.

“In light of recent school threats, which not only take place in our community and the surrounding area but throughout our country, this behavior will not be tolerated,” said Cabarrus County Sheriff Brad Riley.

“We will prosecute every threat to the fullest extent, including copycat threats or threats intended to strike fear to the people who learn and work in our schools. It is important that we establish a line in the sand and find ways to eradicate this problem.”

The knife threat came the day after another Cabarrus County student, 17-year-old Jordyn Ilana Levinson, was charged in connection with a bomb threat at her school, Hickory Ridge High in Harrisburg.

Hickory Ridge was evacuated Tuesday morning after a note about a possible bomb was found in a school restroom. With the help of dogs trained to sniff out hazardous devices, the school resource officer and several deputies searched the school and deemed it safe.

Cabarrus detectives established a person of interest through interviews. On Thursday, they served a search warrant at Levinson’s home on Macallano Drive near Harrisburg.

Levinson has been charged with making a false bomb report, a felony. She was given a $25,000 secure bond and placed in the county detention center.