On Saturday, December 13, 2025, a mass shooting occurred at Brown University in Providence, Rhode Island, during the final examination period in the Barus & Holley engineering and physics building. A single gunman opened fire with a handgun inside a classroom, striking students who were gathered for a review session. The attack resulted in two students killed and nine others wounded, all of whom were Brown students.  This traumatic violence unfolded in the early afternoon around 4 p.m. EST, prompting immediate shelter‑in‑place alerts across campus as law enforcement and emergency responders converged on the scene.

Brown University officials activated emergency protocols as shots rang out, issuing alerts via text, phone, and email to students and staff to lock doors and remain hidden while police entered the area.  The campus was effectively locked down, classes and exams were canceled, and faculty, students, and families were forced into crisis mode. Trauma teams at nearby hospitals worked to stabilize the injured, while campus counseling and psychological services were activated to support survivors and those affected by the terror on site.  The sudden outbreak of violence deeply shocked the campus community, overshadowing the final weeks of the fall semester with grief and uncertainty.

In the hours and days after the shooting, authorities launched an extensive manhunt for the suspect, releasing surveillance footage and images of a person believed to be connected to the crime. A reward of up to $50,000 was offered for information leading to arrest and conviction. Law enforcement canvassed neighborhoods, reviewed private and public video, and urged the public to provide tips or footage that might help identify and locate the shooter.  Early confusion about a potential suspect in custody was cleared up when police clarified that the individual initially detained was released after being cleared of involvement.

The scope of the investigation widened when authorities began exploring a possible connection between the Brown University shooting and a separate killing that occurred two days later in Brookline, Massachusetts. There, MIT professor Nuno F.G. Loureiro, a nuclear science expert, was fatally shot at his home. Investigators examined whether the incidents were linked, considering shared evidence and suspect connections, although definitive links were initially unconfirmed by law enforcement.

In a major investigative development later in the week, authorities identified the suspect in both the Brown University shooting and the MIT professor’s killing as Claudio Manuel Neves Valente, a 48‑year‑old former Brown University graduate student. Law enforcement located Valente in a storage facility in Salem, New Hampshire, where he was found dead from an apparent self‑inflicted gunshot wound. Officials announced his death and confirmed that he was responsible for the Brown campus attack, effectively bringing the manhunt to a close.  While some questions remain about motive and the full timeline, police indicated that evidence tied Valente to both shootings, and that the case, in terms of pursuing additional suspects, was considered closed.

The Brown University shooting deeply affected both campus and local communities. Vigils, memorials, and emotional gatherings followed as students, faculty, families, and local residents mourned the loss of life and supported those wounded. Calls for enhanced campus safety systems, security upgrades, and improved emergency communication were raised by students and parents grappling with how easily the gunman accessed the building. Counseling and trauma resources were expanded to help the community cope with shock and grief in the weeks after the incident. Local leaders and university officials emphasized their commitment to both supporting survivors and preventing future violence, even as the investigation continued to review evidence and testimony around motives and circumstances.