Four people were killed, including an off-duty New York City police officer, when a gunman opened fire in an office tower ...

A New York City police officer and three other people were killed in a shooting in Midtown Manhattan on Monday evening, ...

An active shooter incident occurred in Midtown Manhattan, New York, officials said. Here's what to know about 345 Park Ave.

Didarul Islam, a 36-year-old NYPD officer, was off duty and working a security job when he was fatally shot by a gunman who opened fire at the 345 Park Avenue office building on Monday.

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

The last killing of such a scale in the city was during a fast-food restaurant robbery in Queens in 2000. Mass murders of ...

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

New York City Police Commissioner Jessica Tisch told a press conference that surveillance video showed the suspected gunman, ...

An active shooter situation is unfolding at the Blackstone building, 345 Park Avenue near East 52nd Street in Midtown ...

At least four people, including an off-duty NYPD officer, were shot and killed in Midtown Manhattan in New York on Monday ...

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

CBS News law enforcement expert Richard Esposito explains the police response to the New York City shooting at a Midtown ...