Workers returned to 345 Park Avenue​ under the watchful eyes of NYPD officers and a surplus of security after the NYC mass ...

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 ...

LePatner had deep ties in New York’s Jewish community, where she grew and returned after college to make a mark on religious, ...

The gunman who killed four people, including an NYPD officer, inside a Manhattan office building Monday evening left a note ...

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

Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday.

The New York police officer killed in a mass shooting in a Manhattan skyscraper on Monday was an immigrant who left behind a ...

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the ...

Five people—including the suspected perpetrator Devon Tamura and NYPD officer Didarul Islam—were left dead at an office ...

Investigators are examining why the gunman who killed four people before taking his own life at a New York City office tower ...

Everytown for Gun Safety’s Nick Suplina joins ABC News’ Linsey Davis to unpack what the Manhattan shooting tells us about the ...