Overview

• The Office of Chief Medical Examiner reported “unambiguous diagnostic evidence” of Chronic Traumatic Encephalopathy in Shane Tamura’s brain, classifying it as low-stage under current criteria and noting CTE is only diagnosed after death.
• Tamura, 27, drove from Las Vegas and opened fire at 345 Park Avenue on July 28 before dying of a self-inflicted gunshot wound, according to police.
• Investigators recovered a three-page note claiming he had CTE, blaming the NFL, and asking that his brain be studied; authorities believe he intended to reach the league’s offices but took the wrong elevator, and one NFL employee was seriously injured.
• The victims were identified as building security guard Aland Etienne, Blackstone executive Wesley LePatner, Rudin Management associate Julia Hyman, and off-duty NYPD officer Didarul Islam.
• The NFL expressed condolences and highlighted that research on CTE is evolving, while experts cautioned against attributing a single violent act to the disease and probes into motive, firearm access, mental-health history, and building security continue.