At about 10 a.m. Tuesday, the Riverside Elementary School received a pre-recorded message that was general in nature and threatened to harm children.
The school immediately notified Princeton Police headquarters. Police patrol units responded to Riverside School and found the school to be safe.
As a precaution, police remain at Riverside School throughout the day. Patrols have been increased in the areas of all the schools throughout the municipality.
All the Princeton private and public schools were notified of the incident by the Princeton Police Department. Each school took actions as they deemed appropriate, including sheltering the children inside.
The Princeton Police Department will continue to investigate the origin of the threat.