Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

NYPD said the gunman purchased the fully-assembled AR 15-style rifle used in the shooting from his supervisor.

FBI assists Montana police in search for shooting suspect Michael Paul Brown who remains at large after attacking multiple ...

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

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

The gunman accused of killing four people in a Midtown Manhattan office tower bought the AR-15-style rifle used in the attack ...

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the ...

The suspected gunman who killed three people outside the largest casino in Reno, Nevada, before police officers shot and ...

The gunman shot five people at a valet area, fired at a resort security guard, who wasn’t injured, and then fatally shot ...

Police say a gunman who killed four people in a Manhattan skyscraper before taking his own life claimed to have a brain ...

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