LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

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

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

I have a pet peeve about news coverage of mass murder. When the story breaks, cable news anchors report, as they first did after Monday's shooting in Midtown Manhattan, that the killer's motives were ...

Didarul Islam, a 36-year-old NYPD officer, was off duty and working a security job when he was fatally shot by a gunman who ...

BREIT CEO Wesley LePatner was among those killed in the shocking attack, plus more New York City real estate news.

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

A flatbed truck carried a digital billboard showing photos of Officer Didarul Islam and a commemorative message from his union.

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

"He comes with a machine gun. He's not going to know who I am. He's going to shoot, no matter what," Sebije Nelovic said in a ...

The day after NYPD Detective Didarul Islam was laid to rest, he'll be remembered with a vigil at the precinct where he worked in the Bronx.