DENTON (CBSDFW.COM) – The Denton campus of Texas Woman’s University was on lockdown for more than a hour Tuesday morning. The lockdown, which was issued at 9:40 a.m., was lifted at 11:00 a.m.

Initially, faculty and staff were advised to keep their doors locked and not to call DPS unless it was an emergency.

Minutes after the lockdown was issued the university website displayed an emergency alert saying, “a male student made verbal threats during a class”.  When that student left the room the instructor dismissed class and notified campus police.

‘Pioneer Alert’ text messages were sent out advising everyone to remain inside.

The suspect, 30-year old Christopher Gillette, was arrested and is in the Denton County Jail, accused of threatening his classmates.

No one on campus was harmed.