SAN JOSE — San Jose State closed two business department buildings for about an hour Monday afternoon and searched them after a report of a man with a gun.

But the floor-to-floor search did not turn up a gunman.

At 3:22 p.m., the university ordered students and staff to evacuate the Boccardo Business Complex and the adjoining Business Tower offices after receiving an unconfirmed report of an armed man in a business classroom, according to campus spokeswoman Pat Lopes Harris.

About an hour later, university police reopened the buildings after failing to find a gunman or any other witnesses who saw one, Harris said in an email.

During the search, campus police cordoned off the area near the buildings and 10th Street and directed away drivers.