Swatting incidents have occurred at Villanova and University of South Carolina in recent days. What is going on? What is swatting? What to know.

F or the second time in less than a week, Villanova University was the scene of an active shooter hoax report on Sunday, prompting police to clear buildings at the Pennsylvania campus before investigators determined the incident was not legitimate, officials said.

False reports of active shooters have led to panic and temporary lockdowns at Villanova University and the University of Tennessee at Chattanooga.