Associated Press
Los Angeles Police Chief Charlie Beck, left joins Los Angeles Mayor Antonio Villaraigosa, right as USC President C.L. Max Nikias answers questions during a news conference at the USC campus in Los Angeles on Thursday, April 26, 2012.  The University of Southern California and Los Angeles police say they will beef up security around the campus following the unsolved killings of two Chinese graduate students. On Thursday it was announced that the school will pay to put four more city police officers on patrol. In addition, Police Chief Charlie Beck says 30 more officers will be assigned to the division that handles the university. (AP Photo/Nick Ut)

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