Princeton issued an emergency message directing people on campus to shelter in place Tuesday after a security guard at the University art museum spotted a man with a gun who turned out to be a police officer escorting a tour group. The matter was quickly and safely resolved, and the shelter order was lifted after about 10 minutes.
The police officer, from a jurisdiction outside Mercer County, was with a group of teenagers in an exchange program who came to tour the museum's galleries. The officer, who did not alert University officials to his presence in advance, was not wearing a uniform but was wearing a badge and had the gun in a holster.
Municipality of Princeton police officers responded and talked with the officer, who was cooperative. The gun was never removed from the holster.
