LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

New York City’s deadliest shooting in 25 years – in a state with some of the toughest gun laws in the nation – is raising ...

"He comes with a machine gun. He's not going to know who I am. He's going to shoot, no matter what," Sebije Nelovic said in a ...

A former high school football player who opened fire in a Manhattan building Monday — killing four people before fatally ...

A long-time office cleaner said she encountered the suspected in a mass shooting in a Midtown Manhattan office building.

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

“CTE is linked to repetitive brain trauma and has a distinct pathology that can only be diagnosed at autopsy,” says Dr. Ross ...

The suspect in the recent New York City shooting had a note in his pocket, which claimed he has chronic traumatic encephalopathy. But that neurological condition can only be diagnosed with an autopsy.

CTE cannot be diagnosed until the patient has died and their brain examined. But doctors said there are symptoms such as ...

Shane Tamura, who police said shot and killed four people in Manhattan, claims he had chronic traumatic encephalopathy.

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