U of Ariz. Police: All-Clear After Hunt for Gunman Police searched a building on the University of Arizona campus Friday night after receiving a report of a gunman, but no sign of a shooter was found. The campus police department told The Associated Press that officers gave the all-clear and the area of the campus was reopened Friday night. A few hours after the search began, the department's Twitter site said: "UAPD has cleared the Admin Bldg. No one was found, no injuries or signs of a shooting. Campus police spokesman Sgt. Juan Alvarez said earlier that police received a 911 call about a man with a rifle at the Administration Building, and numerous officers responded. Alvarez said police did a floor-by-floor search.