A Las Vegas man who killed four people in a July shooting at an office building in Manhattan had Chronic Traumatic Encephalopathy, also known as CTE, according to the New York City Office of Chief Medical Examiner.

Officials released their findings in a statement Friday, saying the department had concluded its neuropathological examination in the case of Shane Tamura.

Tamura, 27, died by suicide after committing the mass shooting at a Park Avenue skyscraper that is home to the headquarters of both the NFL and Blackstone, one of the world’s largest investment firms, as well as other tenants.

“Following a thorough assessment and extensive analysis by our neuropathology experts, OCME has found unambiguous diagnostic evidence of Chronic Traumatic Encephalopathy, also known as CTE, in the br

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