Police officers secure a school building at the Massachusetts Institute of Technology (MIT) near where a police officer was reportedly shot in Cambridge

 
Police officers secure a school building at the Massachusetts Institute of Technology (MIT) near where a police officer was reportedly shot in Cambridge
Police officers secure a school building at the Massachusetts Institute of Technology (MIT) near where a police officer was reportedly shot in Cambridge, Massachusetts April 18, 2013. REUTERS/Kristyn Ulanday