'...“There was a big group and there was yelling and people were [chanting] ‘fight, fight!’ All of a sudden like you see a guy in a white shirt, button down … I jumped from the bench, I grab the girl who was next to me, and start telling everybody to get down,” [a student] said.

...[An official] confirmed two guns were identified by witnesses at the scene, though officials could not say which individual had the second firearm. Up to a dozen shots were fired, Dougherty said, and city police added that although they could not disclose the make, model or caliber of the guns, evidence was collected at the scene.

Under article IV of the Duquesne University Code of Student Rights, Responsibilities and Conduct, is it a violation of policy for students to possess firearms, explosives, other weapons, or dangerous chemicals on University premises...'