Fellow student Kaci Sloan, 19, was arrested soon afterward in connection with the stabbing, the ASU Police Department said, according to 12 News, AZ Central and ASU’s The State Press. An ASU spokesperson confirmed the arrest in a statement to PEOPLE.

Matthew McCormick, a Navy veteran and an ASU student, told FOX 10 Phoenix that he "felt compelled to do something" when a woman was stabbed during a random attack on campus Sept. 19. (KSAZ)

On the morning of Sept. 19, students at Arizona State University were filing into economics class when, out of nowhere, a knife attack almost happened, seemingly at random. But police allege the attack wasn’t random at all.