(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 ...

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

A Blackstone executive was seemingly a random victim in a mass shooting that left four dead, but some see parallels with the ...

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

Blackstone told employees on Friday it will reopen its New York headquarters on August 4, a week after shuttering it in the ...

There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on ...