A 15-year-old brought a gun to Weequahic High School in Newark on Tuesday, according to police.
Authorities say they responded to a call just before 3 p.m. of a juvenile male in possession of a firearm.
They say the teen was found in possession of a firearm and arrested. No one was injured.
There is no word yet if the teen is a student at the high school as the investigation into what happened continues.