CORRECTION TO THIS IMAGE:
A previous version of this caption gave an incorrect age for Sean Collier. He was 27, not 26.
MIT Police Officer Sean A. Collier was fatally shot and killed Thursday night. Collier was shot on Vassar St. in his vehicle near the Stata Center (Bldg. 32) and Koch Institute for Cancer Research (Bldg. 76). He was 27 years old and a resident of Somerville.
MIT Police Chief John DiFava, in a statement, described Collier as a dedicated officer who was extremely well liked by his colleagues and the MIT community.
At approximately 10:20 p.m., police received reports of shots fired on the MIT campus, the Middlesex County District Attorney’s office said. At 10:30 p.m., Collier was found shot in his vehicle in the area of Vassar and Main streets. He was found with multiple gunshot wounds, and was transported to Massachusetts General Hospital and there pronounced deceased, the statement said.