close Video

NEW You can now listen to Fox News articles!

The man who opened fire and killed four people at the NFL's New York City office in July had "unambiguous diagnostic evidence" of low-stage CTE, the New York City Office of the Chief Medical Examiner said Friday.

"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 brain tissue of the decedent. The findings correspond with the classification of low-stage CTE , according to current consensus criteria," the medical examiner’s office said.

"CTE may be found in the brains of decedents with a history of repeated exposure to head trauma. The science around this condition continues to

See Full Page