The unpredictable factors leading up to a mass shooting in a Manhattan office building highlight the limitations of a ...

The shock is beginning to wear off," said co-chair Mitchell Nussbaum, who is based in New York but was traveling when an ...

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

The New York City office building that was the site of a mass shooting Monday had significant security measures in place.

NYPD detectives searched the shooter's studio apartment in Las Vegas where they found what law enforcement sources described ...

One CEO of a publicly traded company said mehe’d like to see companies scrap existing security measures and “put someone with ...

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

Employees at firms including Blackstone and KPMG hid and set up barricades during the gunman’s rampage.

A shooter killed four people at a Midtown Manhattan office building Monday before turning the gun on himself, police say.

At the height of the evening rush, a man double-parked his BMW on Park Avenue, calmly strode across a public plaza with an ...

Four people died after a gunman opened fire in a Manhattan office building, and security footage showed the shooter calmly ...

Four people — including two Jewish women — were killed during a mass shooting at 345 Park Avenue in Midtown Manhattan on ...