Key takeaways

• A gunman opened fire in a Brown University engineering classroom during a study session, killing two students and injuring nine others.
• The shooter remains unidentified and at large, with police relying on neighborhood security video of a masked person of interest.
• One victim is still in critical condition, while five others are stable and three have been released from hospital.
• Brown University has canceled all remaining Fall 2025 classes and exams and is providing extended support as the campus mourns and the investigation continues.

---

A mass shooting at Brown University’s Barus & Holley engineering and physics building has killed two students and injured nine others during a weekend study session, with investigators still searching for the gunman and the university canceling all remaining Fall 2025 classes and exams.

Police say the attacker walked into a first-floor classroom on Saturday afternoon while students were preparing for a Principles of Economics final and began shooting, triggering a campus-wide lockdown and a large response from city, state and federal officers.

The students killed have been identified as 19-year-old sophomore Ella Cook and 18-year-old first-year student Mukhammad Aziz Umurzokov. One wounded student remains in critical condition, five are in stable condition and three have been discharged from hospital.

Investigators have released several videos showing a masked, stocky person of interest moving through streets around Brown University before and after the attack, but no suspect, weapon or motive has been confirmed. Police say witness accounts match the person in the footage and that they believe Brown was targeted, though not any specific individual.

Authorities say they briefly detained a man in his 30s as a person of interest on Sunday but released him after concluding he was not the shooter, and have appealed for more home-security footage from the College Hill neighborhood.

In a letter to alumni, Brown University President Christina Paxson said the campus is in “deep mourning” and confirmed that all remaining undergraduate, graduate and medical classes, exams and projects for the Fall 2025 semester have been canceled while parts of the campus remain an active crime scene.

Memorials of flowers and candles have appeared outside the Barus & Holley building and at campus gates, and Brown has expanded counseling, spiritual care and other support for students, staff and families as the community waits for answers and the arrest of the shooter.