A lone gunman walked into a midtown Manhattan office building Monday and opened fire, killing four people, including an NYPD officer, before turning the gun on himself.

Police have identified the man who they say entered a Midtown Manhattan office building wearing body armor and opened fire, ...

During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

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 ...

Newly released police reports and body camera footage are shedding light on the troubled path that led a shooter on a ...

Las Vegas police release bodycam footage and 911 calls from Manhattan mass shooter Shane Tamura showing mental health ...

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

A 911 call cited by CNN reveals the fear Shane Tamura's mother expressed about the safety of her son as well as herself ...

Investigators found the note in the wallet of 27-year-old shooter Shane Tamura who police said opened fire inside of 345 Park Avenue.

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

Five people, including a New York City police officer, died in a shooting in Manhattan. Suspected gunman Shane Devon Tamura ...

The 27-year-old Nevada man opened fire at a New York City office building, killing at least four people and then himself.