Three days after committing the Boston Marathon bombing, while still at large, the brothers Dzhokhar Tsarnaev and Tamerlan Tsarnaev shot and killed Massachusetts Institute of Technology campus police officer Sean Collier in his patrol car near MIT’s Ray and Maria Stata Center. About three hours after the MIT shooting and after carjacking a vehicle, Tamerlan died in a gunfight with police in Watertown, Massachusetts. Another officer was seriously wounded. Shot in the neck and hiding in a boat parked nearby, Dzhokhar was arrested 18 hours later, and hospitalized in critical condition. He was sentenced to death in 2015.
