Around midnight last night, campus police at Florida State University responded to calls about a shooting in the school’s 24/7 library. There, they shot and killed a gunman who refused to put his weapon down, and reportedly opened fire on the officers. Details of the shooting are still coming in this morning, but there are reports that three students were shot, at least one of whom is in critical condition.

According to the vice president of student affairs, at the time of the shooting, the library of the 40,000-student schooled was “packed.” FSU students inside the building tweeted photos of makeshift barricades made out of desk and shelves that they created when the gunshots broke out. Though the campus will remain open today, the school’s president has decided to cancel all classes …