Brown MIT Shooting

A shooter killed two at Brown and an MIT professor

Claudio Neves Valente / Ella Cook / Mukhammad Aziz Umurzokov / Nuno Loureiro /

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Last Updated

1/13/2026

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The Breakdown 100

A tragic mass shooting at Brown University on December 13, 2025, left two students dead and nine others injured, as a former graduate student unleashed violence before allegedly also killing an MIT professor just days later.
The shooter, Claudio Neves Valente, a 48-year-old Portuguese national, was discovered dead in a New Hampshire storage unit, having taken his own life two days prior, emphasizing the urgent need for answers about his motives.
Victims Ella Cook and Mukhammad Aziz Umurzokov lost their lives in the university attack, while the second victim, MIT professor Nuno Loureiro, was tragically linked to Valente due to their shared academic background.
The harrowing events have ignited debates about campus safety at elite universities, alongside discussions about gun control and mental health support in the wake of this senseless violence.
The investigation into Valente's background revealed long-held ties to the institutions involved, raising questions about his descent into violence amidst an academic career that included failures and setbacks.
In light of the tragedy, President Donald Trump's administration suspended a green card lottery program that permitted Valente entry into the U.S., intertwining immigration policy discussions with the aftermath of the shootings.

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