A vigil for NYPD Det. Didarul Islam, one of the four victims​ killed in the Midtown Manhattan office building shooting, is ...

The owner of a private security business on Park Avenue said he questions how a shooter got so far into a Midtown office ...

A shooting Monday at an office building in New York City that is home to the Blackstone investment firm and the NFL left four ...

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

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

Four people were shot and killed in Midtown Manhattan on Monday. The deceased included two males, one female, and one NYPD ...

This is a breaking news story. For latest updates, please go to our live blog. An NYPD officer and at least four other ...

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

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

Investigators found also found 800 rounds and a 357-caliber handgun in a BMW the shooter drove to the scene, the NYPD said.

A man carrying a high-powered rifle shot and killed four people, including an off-duty police officer working security in Midtown Manhattan, sources told ABC News.