The former high school football player who killed four people inside a Manhattan office tower that houses the headquarters of the NFL, and who blamed the league for hiding the dangers of brain injuries, was suffering from the degenerative brain disease CTE, New York City's medical examiner said Friday.

Shane Tamura, 27, had “unambiguous diagnostic evidence” of low-stage chronic traumatic encephalopathy, commonly known as CTE, according to the medical examiner.

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Shane Tamura, who killed four people inside a Manhattan office tower that houses the NFL this summer, was suffering from a degenerative brain disease, the New York City medical examiner said Friday

Tamura, 27, had “unambiguous diagnostic evidence” of low-stage chronic traumatic encephalopathy, commonly k

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