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

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

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

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

Shane Tamura — who fatally shot four people at a Midtown East office building — said in a suicide note he believed he ...

The gunman who opened fire in a Manhattan skyscraper home to the NFL's headquarters reportedly left a suicide note.

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

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

In a video message, Tisch said Tamura left a suicide note and claimed to be suffering from chronic traumatic encephalopathy ...

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 ...