NFL headquarters shooter diagnosed with CTE

"Shane Tamura, the man who killed four people and then himself in a July shooting at NFL headquarters, was posthumously diagnosed with chronic traumatic encephalopathy, according to a statement from the New York City Officer of the Chief Medical Examiner. Tamura, 27, had claimed in a note found in his wallet following the shooting that he believed he had CTE and wanted his brain tested for it after his death. The medical examiner's office finding determined "unambiguous evidence" of CTE in Tamura's brain tissue. The testing determined Tamura suffered from "low-stage CTE." CTE can only officially be diagnosed after death."

"Tamura entered 345 Park Avenue around 6:30 p.m. on July 28 and killed four people: Didarul Islam, an off-duty police officer; Wesley LePatner, a real estate executive at Blackstone; Julia Hyman, an associate at Rudin Management and Aland Etienne, a security officer. He also wounded an NFL employee and according to law enforcement was believed to be attempting to reach NFL headquarters but took the wrong elevator."

Shane Tamura, 27, was posthumously diagnosed with low-stage chronic traumatic encephalopathy by the New York City Office of the Chief Medical Examiner. Tamura killed four people and then himself during a July 28 attack at NFL headquarters and also wounded another person. A note in Tamura's wallet said he believed he had CTE and wanted his brain tested after death. Tamura entered 345 Park Avenue and reportedly took the wrong elevator while attempting to reach NFL offices. Tamura played tackle football from age 6 through high school, later worked in private security and casino surveillance, and experienced mental health issues including headaches.

Read at ESPN.com