Shane Tamura, the 27-year-old gunman who fatally shot 36-year-old New York City police officer Didarul Islam and several ...

The gunman in the deadly Midtown Manhattan shooting, Shane Tamura, wrote about the brain disease CTE in a note obtained by ...

The gunman in a recent Manhattan shooting claimed he had CTE. Here's what CTE is, plus what the most recent research suggests ...

The 27-year-old man who shot and killed four people at a Midtown office building on Monday carried a note in his pocket, ...

A 2017 study found that more than 87% of football players tested across all levels — high school, college, and pros — tested ...

The Midtown Manhattan shooter speculated that the condition was a cause of his mental illness. But drawing that conclusion is ...

New York City's Office of Chief Medical Examiner told USA TODAY Sports it would examine the brain of NYC shooter Shane Tamura.

Shane Tamura, who killed four in NYC, blamed the NFL and CTE in a note. His suicide has reignited debate over football-linked ...

A Manhattan gunman killed four people, blamed the NFL and CTE in a note, and took his own life. Victims included an NYPD ...

Shane Tamura is suspected of shooting four people in Midtown Manhattan, where the NFL offices are. A note he left references ...

(NEW YORK) -- The man who opened fire in a Midtown Manhattan office building, killing four people and wounding a fifth, had a ...

Chris Nowinski, co-founder and CEO of the Concussion Legacy Foundation, joined ABC News Live to discuss the Manhattan shooting suspect’s claim of having CTE.