Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the ...

Five people were shot when a gunman opened fire at a Manhattan skyscraper on July 28. Here's what we know so far about the ...

An NFL employee was seriously injured during the mass shooting at the Manhattan office tower that houses the league’s ...

New York City homicide detectives sought clues on Tuesday to what possessed a Las Vegas man to drive cross-country and storm ...

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

Investigators are combing through evidence in the wake of New York City’s deadliest mass shooting since 2000, trying to ...

NYC is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office at 345 Park ...

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

Follow along for live updates with the New York City shooting, where police investigate motive after five people, including ...

Nekeisha Lewis spoke with NBC News' Savannah Sellers and Joe Fryer about what she witnessed the moment before and after a ...

Officials say a man with a rifle killed an off-duty New York City police officer and three other people before taking his own ...

The gunman who killed four people, including an NYPD officer, reportedly had a grievance against the NFL and blamed football ...