NYC office shooter who criticized NFL had CTE in his brain, medical examiner says

"The man who shot and killed four people in a New York City office building in July before killing himself had CTE in his brain, according to the New York City medical examiner's office. Shane Tamura, who carried out the shooting at 345 Park Avenue on July 28, left behind a three-page handwritten note that said "Please study brain for CTE.""

"CTE, or Chronic Traumatic Encephalopathy, is a brain condition associated with repeated head injuries. Symptoms include memory loss, impaired decision-making, personality changes, and impulsiveness. It can be diagnosed only by analyzing the brain after death. Tamura, a former high school football player, appeared to be targeting the National Football League, which has an office in the midtown Manhattan office building. "Football gave me CTE and it cause me to drink a gallon of antifreeze," his note read."

Shane Tamura shot and killed four people in a Manhattan office building on July 28 before killing himself. He left a three-page handwritten note that said "Please study brain for CTE" and criticized the National Football League. CTE is a brain condition associated with repeated head injuries with symptoms including memory loss, impaired decision-making, personality changes, and impulsiveness, and is diagnosable only by postmortem brain analysis. The New York City Office of Chief Medical Examiner found unambiguous diagnostic evidence of low-stage CTE in Tamura's brain tissue. CTE has been identified in some former NFL players, and the NFL acknowledged a link to CTE in 2016 while saying it has implemented safety rules.

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