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The suspect in the Dec. 13 mass shooting on the campus of Brown University and the shooting of MIT professor Nuno Loureiro has been identified as 48-year-old Claudio Manuel Neves Valente, who was found dead by suicide inside a Salem, New Hampshire storage unit on Thursday night. A tipster who encountered Valente on a sidewalk outside Brown University and posted about it on Reddit provided crucial information that led to police identifying the suspect. CBS News' Tom Hanson breaks down what we kno

Massachusetts police are searching for a suspect in the killing of an esteemed MIT professor. Police say Portugal native Nuno F.G. Loureiro, who taught nuclear science, engineering and physics, was shot inside his home in Brookline. David Muir reports.

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