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By SHEILA V KUMAR / Associated Press

BATON ROUGE, La. (AP) -- Louisiana State University officials aren't sure when they will lift a campus-wide evacuation order following a bomb threat.

LSU spokesman Herb Vincent says officials hope to reopen the Baton Rouge campus by Monday night, but they aren't certain if a building-by-building sweep will be complete before Tuesday.

Thousands of students, professors and workers were told to leave the campus Monday morning.

University spokeswoman Kristine Calongne says Chancellor William Jenkins called for the evacuation because of a threat phoned into 911 about 10:32 a.m. The caller didn't direct the threat to any specific area of the campus.

Police officers with bomb-sniffing dogs were combing through each of the university's 250 campus buildings.

College campuses in Texas, North Dakota and Ohio received similar threats Friday. Police found no explosives.

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