The University of Texas says all university buildings have been cleared and are reopening after a bomb threat prompted an evacuation of the Austin campus.

The university posted on its website that all classes have been canceled for the remainder of the day Friday but other university activities will resume by 5 p.m.

The school had issued and alert shortly before 10 a.m. Friday telling people to immediately evacuate all campus buildings and "get as far away as possible" after the school received a phoned-in bomb threat.

University of Texas director of communications Rhonda Weldon says the university received a call about 8:35 a.m. from a man claiming to be with al-Qaida. The man said he'd placed bombs all over the campus that would go off in 90 minutes.

Wheldon says all buildings were evacuated at 9:50 a.m. as a precaution.

North Dakota State University in Fargo, N.D., also ordered a campus evacuation Friday morning. But it was unclear whether the two evacuations were related.