Tuskegee University student Sid Guynn hid under a car when he heard the gunshots that ripped across his Alabama campus amid homecoming celebrations, then ran back to his dorm, frightened by what sounded to him like a machine gun.

The shooting came as Tuskegee’s 100th Homecoming Week was winding down. Its football team has that Saturday played Fairfield-based HBCU Miles College. It is not clear yet what led to the shooting, which sent a large crowd scrambling and was captured on several videos posted on social media.