The University of Texas at Austin has issued an alert on its Twitter account 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-Qaida. The man said he had placed bombs all over the campus and that they would go off in 90 minutes.

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

Multiple news outlets reported students appeared to be leaving campus in an "orderly and calm manner." Police blocked off roads to the 50,000-student campus as lines and lines of cars sat in gridlock trying to get out.

No bombs have been found, according to AP.

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