An off-duty New York City police officer shot and wounded a man in Manhattan's Penn Station, the country’s busiest rail hub, during a chaotic confrontation that began aboard a stopped rush hour train,

Shane Tamura, the man who killed four people in a mass shooting at a New York City office tower before dying by suicide, had chronic traumatic encephalopathy (CTE), a brain disease that has been linke...

The man who shot and killed four people inside 345 Park Ave. in July had Chronic Traumatic Encephalopathy, also known as CTE, according to the New York City Medical Examiner.