Glassboro Police confirmed a shelter-in-place was lifted by early afternoon Thursday, Sept. 22.
An undisclosed threat was made to one of the schools, police said, without naming which one.
No students have been injured and all staff and students are safe, police said on Facebook.
"Our department will continue to have officers present outside each of the schools for the remainder of the day, again as a precautionary measure," police said.
The investigation was reportedly at Glassboro High School, according to multiple reports.
Glassboro police said there was no shooting or shooter involved.
A criminal investigation is continuing with the assistance of the Gloucester County Prosecutors Office and additional agencies, police said.
Police have not released any further information at this time.
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