A Warren County middle school was told to 'shelter in place' while police checked out a suspicious item Wednesday morning.
Hackettstown Middle School, located at 500 Washington Street, kept students inside as a precaution.
According to the Hackettstown police Facebook page, officers were called to the school around 10:30 a.m. because school personnel found what appeared to be a suspicious item across the street from the school.
"In abundance of caution, a shelter in place was initiated so the entire building, including lockers and students backpacks, could be searched and police K9s could be brought in to assist in that search," Superintendent Dave Mango said in a statement.
The restriction was lifted around 11:40 a.m.
Mango said police completed their search and classes resumed. The search "revealed nothing that would have put our students or staff in harm's way," he added.
The police department said they found a large caliber handgun round in the school area.
After a search of the school, no additional items were found.