All Northern Oklahoma College campuses are evacuated after an emergency situation was reported, the school said.
The school said the campuses are closed and employees and students need to leave campus grounds.
No one is allowed to enter.
The school has campuses in Tonkawa in Kay County, Enid and Stillwater.
The Oklahoma Highway Patrol's bomb squad was activated and is going to investigate the threat.
The Enid campus was cleared, Enid police said. They were called after a vague bomb threat was made at the campus, they said.
Stay with News 9 for more information as it becomes available.