The heightened measures come as the shooting touched off a panic in some corporations headquartered in office buildings ...

In the revelation that the shooting suspect in Midtown Manhattan was allegedly targeting the NFL headquarters, the league is ...

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

Workers returned to 345 Park Ave., on Monday​ under the watchful eyes of NYPD officers and a surplus of security after the ...

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

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

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

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

Four people were killed, including an off-duty New York City police officer, when a gunman opened fire in an office tower ...

The same newspaper notes that the killer "obtained a firearm legally," which means he was never "committed" to a mental ...

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

Rep. Nicole Malliotakis spoke with Fox News Digital after the deadly shooting that left multiple people including a police ...