USC officials placed the fraternity Sigma Alpha Epsilon on probation after a student from another college was hurt during an event last week.

On Thursday, a visiting female student from Loyola Marymount University fell from a table while dancing at the Sigma Alpha Epsilon fraternity about 7:30 p.m. and hurt her head and neck, according to USC officials and safety reports. The student was taken to a hospital; her condition was unknown Tuesday.

It was unclear if the Loyola Marymount student had been drinking or if alcohol was present, but campus officials said the fraternity was in violation of school policy. They declined to be more specific.

That incident -- as well as a series of alcohol-related hospitalizations -- prompted USC officials to strictly enforce a ban on weekday parties on the campus' Greek Row for the rest of the semester.

Fraternities and sororities are allowed to have large parties only after 3 p.m. on Fridays and are required to register the events with USC administrators and the Los Angeles Fire Department. USC allowed the Greek organizations to enforce the policy themselves and they often held unapproved "mixers" during the week, according to students.

"As a result of the Greek community's inconsistency this semester in promoting a safe and orderly social atmosphere through self-governance," USC will also require student groups to closely follow existing rules including registering parties and adhering to a strict guest list, Ainsley Carry, vice provost for Student Affairs, said in a written statement.

Campus police responded to reports of seven intoxicated people between Thursday night and Sunday morning, according to campus records.

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