A lockdown at Montclair High School and neighboring Renaissance Middle School Wednesday morning, Nov. 27, resulted from a report of a student possessing a weapon, interim superintendent Dr. Nathan Parker announced in an email to parents and staff. An investigation by Montclair Police found that there was "no credible threat," Parker said.

The lockdown lasted more than an hour and ended shortly after noon with students returning to their classes, according to one student in the high school.

Montclair Police Department officers were notified of the report and responded immediately, MHS principal Anthony Grosso wrote in a separate email to parents. Officers identified and apprehended the student with their belongings, and found that the student did not have a weapon in their possession.

"We want to thank the Montclair Police Department for responding quickly and efficiently," Grosso wrote.

The incident is still under investigation by the Montclair Police Department. Calls to the MPD were not immediately returned.

Parker wrote that Renaissance, which is located across from the high school on Chestnut Street, was closed for precautionary reasons.

This is a developing story that will be updated as information becomes available.

Gwen Orel and Andrew Garda contributed reporting to this story.