FBI Concludes Brown University Shooting Investigation, Citing Shooter's Personal Grievances

Federal authorities have concluded their investigation into the December 2025 mass shooting at Brown University, determining that the perpetrator, Claudio Manuel Neves Valente, acted alone, driven by personal grievances. The 48-year-old Portuguese national, a former Brown doctoral student, killed two students and injured nine others on December 13, 2025. Two days later, he fatally shot MIT professor Nuno Loureiro at his Brookline, Massachusetts, home. Valente was found dead from a self-inflicted gunshot wound on December 18, 2025, in a New Hampshire storage facility.

The FBI's behavioral assessment revealed that Valente had spent years in isolation, lacked support systems, and developed a narrative of personal failure and perceived injustices. Brown University and Loureiro symbolized institutions and individuals he blamed for his unfulfilled life. Despite recorded confessions and grievances, investigators acknowledged that the full motivation remains unclear, emphasizing that mental health alone doesn't fully account for his actions. The FBI stated the attacks had no ties to terrorism and noted that his firearms were legally obtained years earlier in Florida.

In the aftermath, three students injured in the shooting have filed lawsuits against Brown University, alleging the institution failed to implement adequate security measures despite prior warnings. The lawsuits claim the university did not respond to tips, including one from a custodian, about Valente's suspicious behavior before the attack. Brown University has stated that it is reviewing the lawsuits but has yet to comment on their specifics.