Sean Collier, a Massachusetts Institute of Technology police officer, was shot and killed late Thursday night during a confrontation with the two Boston Marathon bombing suspects. He was 26.
The officer was responding to a report of a disturbance when he was shot multiple times, Middlesex Acting District Attorney Michael Pelgro and Cambridge Police Commissioner Robert Haas said.
According to authorities, Collier was taken to an area hospital, where he was pronounced deceased.
Before joining the MIT campus police force, Collier had worked at the Somerville Police Department as an information technology employee. As a young civilian employee there, he also volunteered his time as an auxiliary police officer — a sure sign of someone devoted to law enforcement.