By CBSBoston.com Staff

BROCKTON (CBS) — Brockton High School was put into a stay-in-place order Friday morning while the school investigated a Snapchat post. The order has since been lifted.

According to the Superintendent’s Office, the post showed a magazine clip in a student’s waistband.

READ MORE: Pandemic Continues To Take Toll On Tourism Industry In Massachusetts

The student who posted it was pulled aside and he admitted to taking the photo in September and posting it on Friday. He is now facing criminal charges.

READ MORE: Gov. Charlie Baker: Decision Not To Run For Third Term Was 'Complicated And Difficult'

Teaching continued during the stay-in-place order and there was never an active threat against the school, the superintendent said.

MORE NEWS: 'Do Not Panic': Boston Doctor Says Vaccines Should Work Against Omicron Variant

Two weeks ago, high school students were dismissed early after police arrested a student for bringing in a gun.

CBSBoston.com Staff