The New York City Police Department sent detectives to Las Vegas to work with the Bureau of Alcohol, Tobacco and Firearms to ...

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

Investigators are examining why the gunman who killed four people before taking his own life at a New York City office tower ...

Officials say a man carrying a rifle killed four people at a New York City office tower. The shooting took place Monday ...

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

The grief for New York Police Department Officer Didarul Islam stretched from Midtown Manhattan all the way up to the 47th ...

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

A New York City police officer and three other people were shot and killed inside a Midtown Manhattan office building on ...

Police lined the streets of New York City to pay their respects to fellow officer Didarul Islam, who was among the four ...

Authorities say Shane Devon Tamura travelled across the country from Las Vegas to open fire inside the skyscraper.

An off-duty New York City police officer and an executive at an investment firm were among four people killed by a gunman at ...

As for security, badges and sign-in lists for visitors became standard fare in New York office buildings after the Sept. 11 ...