GREENSBORO, N.C. — A lockdown at North Carolina A&T State University has been lifted after a search failed to find any sign of a reported gunman.

Campus police chief Glenn Newell issued the “all clear” shortly before 1 p.m. Classes resumed at 2 p.m.

Police had received a report of a man with a rifle at 9:57 a.m. in the General Classroom Building, resulting in a security alert to students to “shelter in place.” Two public high schools on the campus were also locked down.

Campus police and officers from the Greensboro Police Department responded, locking down a portion of the campus while teams swept and evacuated four buildings.

N.C. A&T is a historically black university with a nearly 200-acre central campus east of downtown Greensboro.