During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed a police officer, then opened fire on other innocent strangers. Within a ...

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

“CTE is linked to repetitive brain trauma and has a distinct pathology that can only be diagnosed at autopsy,” says Dr. Ross Zafonte, a principal investigator of the Football Players Health Study at ...

Fifty-nine years ago today, mass murder in the form of a rampage shooting on a school campus blasted its way into the American consciousness – never ...

Shane Devon Tamura, 27, identified by the NYPD as the Midtown Manhattan office building shooter. Obtained by ABC News(NEW ...

Manhattan office cleaner Sebije Nelovic says she came face-to-face with Shane Devon Tamura, the man authorities alleged ...

Roger Goodell also gave a health update on the league employee who was seriously injured in the gun attack that killed four ...

The gunman who opened fire at a Manhattan office building Monday, killing four people before taking his own life, legally ...

Four people, including an off-duty New York City police officer, were killed Monday when a gunman carrying a rifle opened ...

Nevada Gov. Joe Lombardo says mental health services, not gun laws, should be the focus following the NYC mass shooting that ...

Muhammad Mainul Islam, a cousin of New York Police Department Officer Didarul Islam, said the victim's father had a stroke ...

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