BISMARCK - After an hours-long lockdown of campus, a Bismarck Police Department spokesman says officers have a teenage suspect in custody in connection to threats of "shooting up" Bismarck State College.

Sgt. Mark Buschena told the media that police had arrested a 16-year-old male suspect Thursday afternoon as he was driving northbound on State Highway 83.

The college went on lockdown starting at 11:30 a.m. Thursday, a spokesperson for the school confirmed, and were released as the campus was searched. Some students reported on Twitter that they had to wait as many as five hours while the search was conducted.

BSC President Larry Skogen said in an email to students and staff that a student had threatened to "shoot up the library with a machine gun," and that threat had been received by the FBI. Skogen said the lockdown was to stop traffic on campus to aid search efforts.

There was no active shooter on the school's campus and all on the premises were safe, the Bismarck Police Department said via its Twitter account.

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The college was set to be the site of a 4 p.m. appearance by Republican gubernatorial candidate Doug Burgum, who announced his candidacy Thursday morning in Fargo. But a tweet from the Burgum campaign's Twitter account at about 1:45 p.m. said the event had been moved to state GOP headquarters in Bismarck.

Bismarck: due to lockdown at @BSCedu, announcement moved to Reagan Repub Center. Our thoughts are with the students, faculty and staff. - Burgum for ND (@DougForDakota) January 14, 2016

There is NO Active Shooter at Bismarck State College. More information will follow shortly. - Bismarck Police (@BismarckPolice) January 14, 2016