Overview

• The OCME said neuropathology found “unambiguous diagnostic evidence” of chronic traumatic encephalopathy in Shane Tamura’s brain, classified as low-stage.
• Tamura, 27, killed four people at 345 Park Avenue — which houses NFL offices — before dying of a self-inflicted gunshot.
• Police recovered a three-page note in which he blamed the NFL and wrote, “Study my brain please. I’m sorry,” and investigators believe he intended to reach the league’s offices but took the wrong elevator.
• The victims were NYPD Officer Didarul Islam, Blackstone executive Wesley LePatner, Rudin Management employee Julia Hyman, and security officer Aland Etienne.
• Experts noted CTE can be diagnosed only after death and its behavioral effects remain under study, as separate inquiries examine Tamura’s firearm purchase and unresolved background checks in Nevada.