Transcript of Authorities announce arrest in Tuskegee University mass shooting

Authorities in Alabama are appealing to the public for help as they try to determine who's responsible for a deadly mass shooting at Tuskegee University. At least one person was killed, more than a dozen were injured. It happened during a celebration of the school's 100th homecoming. A warning, the video you're about to see does show the gunfire ringing out. The latest now from ABC's Faith Abube.

Tonight, young people frantically telling each other to get down. Get out, get out, get out. You can hear the gunfire ringing out around them. The terrifying scene unfolding on the Tuskegee University campus in Alabama overnight.

Making a request to be a from us on the west side of Tuskegee campus.Unknown description of any shooter.It.

Was homecoming weekend at the historically Black University.

While other officers were assisting the medical triage of it, we had to exercise caution because we didn't know if the shooter was still on the scene.

Twelve injured by gunfire, 16 hurt in total, including students. An 18-year-old who was not a student did not survive.

Homecoming was supposed to be an enjoyable time, enjoyable place here at Tuskegee University. It's for something like this to happen, people are disappointed. I'm disappointed. I'm sad, I'm disappointed, really confused about why somebody would do something like this.

Late today, authorities announcing they've made an arrest in connection with the shooting.

Lindsay, here on campus, grief counselors have been made available to students. In the meantime, the university has announced classes on Monday have been canceled as investigators continue processing evidence.

Lindsay. Faith Abube for us. Thank.