FSU ShootingThis video was taken by an unidentified Florida State University student inside the school's Strozier Library during a shooting in the early morning hours of Thursday, Nov. 20, 2014. The Independent Florida Alligator does not own this video and is working on finding its source. 2014-11-20T06:42:25.000Z

This video was taken by a Florida State University student inside the school’s Strozier Library as a gunman shot three people on just after midnight on Thursday, November 20, 2014.

The footage gives terrifying insight in what it’s like to be inside a building with an active shooter.

The students in the library huddle in safety as they listen to the loudspeaker overhead announce: