Police arrested a suspect on the University of South Florida in Tampa Monday afternoon after the man was believed to have entered the campus with a gun.
The suspect, described as an African American male in a green and yellow striped shirt, was seen as he entered a police car.
Students had been told to stay indoors and away from campus Monday afternoon, according to the university's Web site.
A message posted by the university said that officers 3were on scene and began searching the area just before 2 p.m.
Authorities said an off-campus call was transferred to USF police from the Hillsborough County Sheriff's Office. The caller reported that a man with a gun was in front of the university's library.
The campus transit system was shut down while police searched for the suspect.
Police Arrest Suspect After University of South Florida Lockdown