A police officer ties tape to secure an area at Harvard University in Cambridge, Mass., Monday, Dec. 16, 2013. Four buildings on campus were evacuated after campus police received an unconfirmed ... more 
A police officer ties tape to secure an area at Harvard University in Cambridge, Mass., Monday, Dec. 16, 2013. Four buildings on campus were evacuated after campus police received an unconfirmed report that explosives may have been placed inside, interrupting final exams. (AP Photo/Josh Reynolds) less 
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Associated Press | Photo By Josh Reynolds
Mon, Dec 16, 2013 11:57 AM EST