Updated at 5:40 p.m.: Revised to reflect that the campus has been cleared.

Dallas Baptist University was evacuated Tuesday and remained on lockdown for more than four hours after a threat was called in to campus police.

John Shaw, the university’s chief of police, said Dallas police’s SWAT team and the FBI were notified about the “bomb and coordinated armed threat" to the campus, in the Mountain Creek area of southwest Dallas, about 1 p.m.

Live helicopter video from KXAS-TV (NBC5) showed the heavy police presence at the campus.

The university tweeted that anyone on campus needed to evacuate after the school received “a threat against our campus.”

That decision was made out of “an abundance of caution,” Shaw said.

THIS IS NOT A DRILL



We have received a threat against our campus and are evacuating the DBU campus IMMEDIATELY.



For those who cannot evacuate the main campus, move to the Burg Center immediately.



All classes are cancelled today, Tuesday, Oct. 15. Further instructions to come. — D.B.U. (@DBUPatriots) October 15, 2019

Anyone who could not leave campus was told to move to the Burg Center, an athletics building.

Classes were canceled for the day. No one was reported injured during the evacuation.

Authorities searched room by room to clear the campus, Shaw said. Just after 5 p.m., the university announced that all buildings had been cleared and that people could return to campus.

No bomb was found during the threat, university spokesman Blake Killingsworth said.