After a gunman opened fire in a New York City office building and killed four people, experts expressed some concerns ...

The suspect who has died has been identified by police as a 27-year-old man from Las Vegas called Shane Devon Tamura.

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada ...

NYC gunman chased and fired at maid on 33rd floor before she was able to get away - The maid escaped after taking a different ...

MIDTOWN, Manhattan (WABC) -- Investigators are working to piece together what led to the deadly mass shooting at a Manhattan office building that left four people dead and one injured as officials ...

A shooter killed four people at a Midtown Manhattan office building Monday before turning the gun on himself, police say.

Four people died after a gunman opened fire in a Manhattan office building, and security footage showed the shooter calmly ...

Four people — including two Jewish women — were killed during a mass shooting at 345 Park Avenue in Midtown Manhattan on ...

Mayor Adams told ABC News that President Donald Trump called him and expressed his condolences and praised the NYPD's ...

Employees at firms including Blackstone and KPMG hid and set up barricades during the gunman’s rampage.