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, ...

(CNN) — During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed a police officer, then opened fire on other innocent strangers.

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

On a steamy Monday evening, no one inside the Manhattan office building noticed the dark BMW pull up outside. The driver ...

After a deadly shooting at an NYC building that housed NFL and Blackstone offices, safety experts say it’s high time ...

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

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

Family and friends gathered at Central Synagogue to mourn Wesley LePatner, one of four victims killed in Manhattan office ...

Social media users have baselessly theorized that Shane Devon Tamura wasn't targeting NFL headquarters but Wesley LePatner, a ...

Wesley LePatner, 43, was among the four people killed by a gunman who stormed the Park Avenue building where she worked on ...

A security expert offers a list of ‘must-haves’ for workplace safety that may save lives in the event of a mass shooting.

Blackstone Inc. is reopening its New York headquarters on Monday after keeping the office shuttered in the wake of a shooting spree that killed four people, including one of its senior executives.