Brown University

Following a mass shooting inside a first‑floor classroom of Brown’s Barus & Holley building during an exam review that left two students dead and nine others injured, federal and local authorities — including the FBI, ATF and U.S. Marshals — are leading a manhunt while releasing limited surveillance clips and canvassing neighborhoods for private video. Officials say sparse camera coverage inside the older building has hampered identification efforts; the FBI’s Boston office has offered a $50,000 reward for information leading to the gunman’s arrest and conviction, and a person briefly detained was released after evidence shifted.