Purdue University Provost Tim Sands speaks during a vigil for a teaching assistant who was fatally shot on campus, on Tuesday, Jan. 21, 2014, in West Lafayette, Ind. The victim was identified as Andrew Boldt, 21, a senior in electrical engineering from Wisconsin who lived on campus, according to Purdue. Another student, Cody Cousins, was arrested on a preliminary charge of murder, athourities said. (AP Photo/The Journal & Courier, Michael Heinz) MANDATORY CREDIT; NO SALES
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