Villanova University students and families were put on high alert as an active shooter warning ended up being a hoax, according to officials.

The false report of a gunman drew a large police response to the university’s campus northwest of Philadelphia, where freshmen and their parents were told to shelter in place.

“Mercifully, no one was injured, and we now know that it was a cruel hoax — there was no active shooter, no injuries, and no evidence of firearms present on campus,” Donohue wrote. “While that is a blessing and relief, I know today’s events have shaken our entire community.”