Report leads to lockdown at Columbia Senior High School in Maplewood

MAPLEWOOD (WABC) -- An apparent confrontation led authorities in Maplewood, New Jersey to place Columbia Senior High School on lockdown for more than an hour on Monday afternoon.

The lockdown began around 1:00 p.m. after staff inside the school called Maplewood police about a report of a person with a weapon.

Acting Superintendent James Memoli said Maplewood Police Department ordered the lockdown as a precautionary measure.

"We conducted a room by room search. We did get information about the suspects who would have been involved in this. We did identify one student. We found that student in a classroom. He was placed under arrest in that classroom. He was in possession of brass knuckles," Maplewood Police Chief Bob Cimino said.

Investigators were looking for a second person.

As word spread on social media, concerned parents began showing up and lining the sidewalks outside the school.

"From what they (students) understand, there was a confrontation between a kid with brass knuckles, who got arrested, and another kid with a grudge who either had a knife or a gun, but they do not know where he is," Stacie Levy, mother of a freshman at the school, said.

Police say the second suspect is not believed to be a student.

The lockdown ended around 2:20 p.m. No one was injured and students returned to class.