The University of Texas has issued an alert on its Twitter ordering an evacuation "due to threats on campus."

The alert posted shortly before 10 a.m. Friday says people on campus should immediately evacuate all buildings and "get as far away as possible."

University of Texas director of communications Rhonda Weldon told the Associated Press the university received a call about 8:35 a.m. from a man with a Middle Eastern accent claiming to be with al-Qaeda. The man said he had placed bombs all over the campus that would go off in 90 minutes.

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

She says no bombs have been found, according to AP.