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

No motive has been announced. A suicide note was found expressing grievances with the NFL and saying Tamura suffered from CTE ...

The alleged gunman at a shooting rampage in a midtown Manhattan office building was identified as 27-year-old Shane Tamura, ...

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

The NYC shooting victims, Didarul Islam, Wesley LePatner, Aland Etienne, and Julia Hyman, were killed by a gunman inside ...

A shooting Monday at an office building in New York City that is home to the Blackstone investment firm and the NFL left four ...

Follow along for live updates on the New York City shooting, where police investigate motive after five people, including the ...

NFL commissioner Roger Goodell called Monday’s shooting in New York City an “attack on humanity” ahead of Thursday night’s ...

The gunman who killed four people, including an NYPD officer, inside a Manhattan office building Monday evening left a note ...

New York City is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office ...

The NYPD continues to work with investigators across the country to learn more about the gunman in Monday's deadly Midtown ...

The owner of a private security business on Park Avenue said he questions how a shooter got so far into a Midtown office ...