The frantic mom of mass shooter Shane Tamura had repeatedly called 911 on her mentally ill son in the years before he shot up ...

Police say Shane Tamura, the man who shot four people to death before ending his life on Monday, suffered from a ...

The brain of depraved shooter Shane Tamura could possibly be tested for chronic traumatic encephalopathy during an ...

The crazed gunman who killed four people in Monday’s Manhattan massacre thanked a documentary on CTE brain injuries and ...

The gunman who killed an NYPD officer and three other people in a Midtown building on Monday evening was carrying a note that ...

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

Four people were fatally shot during the horrific incident in Manhattan before the shooter turned on gun on himself.

The 27-year-old Nevada man left a note at the scene voicing anger that his mental illness may be linked to his having played ...

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

Investigators found the note in the wallet of 27-year-old shooter Shane Tamura who police said opened fire inside of 345 Park ...

New York’s medical examiner’s office said it will examine the shooter’s brain for CTE. Results may not be public for months.

The NFL’s long history with CTE has come under new attention after Monday’s deadly shooting at the Manhattan office building ...