DEVELOPING: Northern Michigan University and Marquette's public schools have closed because of a threat to the university.
Spokeswoman Kristi Evans says Wednesday an online threat was made to harm students, faculty, staff and administrators at Northern Michigan. Evans had no further details about the nature of the threat, which was discovered shortly before 8 a.m.
Evans says an emergency notice was transmitted on laptop computers that are provided to all 9,400 students. Text messages were sent on cell phones.
She says it's uncertain whether the closure will extend beyond Wednesday.
Evans says the message did not mention the public schools. But the school's interim superintendent says they also were closed as a precaution. Marquette Senior High School is next door to the university campus. The public schools have 3,000 students.
The Associated Press contributed to this report