As multiple rounds of gunfire erupted near Florida State University’s student union minutes before noon on Thursday, hordes of students ran away from the campus trying to get to safety as the sound of emergency sirens grew louder.

Two people were killed and six others were injured when a 20-year-old gunman opened fire on campus on Thursday. Court records show the suspect had a rocky upbringing.

Survivors of the Parkland shooting banded together to form March for Our Lives, a youth-led movement to end gun violence. In the wake of the FSU incident, some expressed shock that such an event could happen again.