SAN JOSE (KPIX) — A man who, police said Thursday, was armed when he ran onto the San Jose State University campus was discovered hours later in the ceiling of a building.

“He has been uncooperative though when we spoke to him, he wasn’t answering any of the questions,” said San Jose State University police chief Gina Di Napoli.

San Jose police said that, at 5:33 p.m., officers responded to the area of North Second Street and East Santa Clara Street after someone called to report a man brandishing a gun.

Officers arrived and spotted a man who ran into the Spartan Complex near South Fourth Street and San Carlos Street, university spokesperson Robin McElhatton said.

Police quickly set up a perimeter around the Spartan Complex to prevent him from escaping. The campus was also put on lockdown and a shelter-in-place was issued.

Although classes are not in session, Di Napoli said three females were inside the Spartan Complex when the suspect entered the building that is made up of classrooms, faculty offices and a gym.

“They actually called us from inside the building so we had officers go in and escort them out,” Di Napoli said.

Shortly after 8 p.m. police said they’d found the suspect in the ventilation system of the building. Shortly after, they announced they’d a handgun nearby.

The shelter-in-place order was lifted shortly after 8 p.m.

The suspect has not yet been identified.

© Copyright 2019 CBS Broadcasting Inc. Bay City News and the Associated Press contributed to this report