A terrifying text message sent students running for cover, barricading themselves in bathrooms and knocking over chairs in the frantic rush to hide from the active shooter reported on their university campuses.

The University of Arkansas reported an active shooter at the Mullins Library Monday. Here are live updates from campus.

It was the latest in a string of false reports about gunfire or armed people directed at several universities in recent days across the country.

An active shooter was reported at the University of Arkansas, Fayetteville campus Monday, according to a university alert system, but local police said there is no evidence that a shooting occurred.

Students on the University of South Carolina's Columbia campus experienced an active shooter scare on Sunday evening, but no threat was found and no shooting took place.

A chilling text message warning of an active shooter sent Villanova University students scrambling — barricading doors, overturning chairs and hiding in fear. Just hours later, a similar scare unfolded 700 miles away. But neither threat was real .

Texas Tech confirmed a false report of an active shooter on the campus Wednesday was consistent with a series of "swatting" incidents around the U.S.