A Florida high school was briefly placed on lockdown Wednesday morning after a student killed herself with a handgun on campus.

Seminole County Sheriff Dennis Lemma said a 17-year-old junior at Lake Mary High School shot herself in the school auditorium. The student asked to leave class to use the restroom around 7:45 a.m. A teacher reported hearing the gunshot about five minutes later.

The school was immediately placed on a code red lockdown following the reports of a gunshot. School officials notified parents with a recorded call. Lemma said the girl’s parents have been contacted by deputies.

Lemma said it does not appear as though any other students or faculty were in the area of the school where the girl killed herself.

Investigators said they are looking into how the student got the gun and how she brought it onto campus.

If you are need help, the national suicide prevention hotline is staffed 24 hours a day at 1-800-273-8255.