Blackstone Inc.’s Steve Schwarzman walked into the company’s headquarters at 345 Park Ave., through the lobby that a week ago ...

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

His AR-15 assault rifle, which he bought from a co-worker for $1,400, had a full clip of 15 bullets, police said.

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

The degree of damage on the upper floor, where only one person was killed, shows how the sunglasses-sporting killer was ...

Gunman Shane Tamura fired nearly 50 shots Monday during his rampage on a Park Avenue skyscraper, where he killed an NYPD ...

Sebije Nelovic always felt safe at 345 Park Avenue. For nearly three decades, she cleaned the ritzy Manhattan skyscraper in ...

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

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

Security expert Patrick Timlin shares workplace safety tips for offices beyond Manhattan skyscrapers, emphasizing awareness ...

The gunman who killed an NYPD officer and three other people in a Midtown building on Monday evening was carrying a note that ...