Officials say 13 people were taken to hospitals after becoming intoxicated at Seton Hall University's Spring Fling concert.
It's not clear if any are students at the Catholic school in northern New Jersey.
University spokeswoman Laurie Pine said in a statement that the school takes its alcohol policies seriously and students who violate them are subject to disciplinary sanctions, according to The Star-Ledger.
Pine says one Seton Hall student in a dorm was taken to a hospital because he was intoxicated.
Saturday's concert featured Grammy-nominated hip-hop star B.o.B.