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 ...

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 ...

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 YORK) -- The Midtown Manhattan office shooter fired 47 rounds from his ...

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

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

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 ...