Police searched Shane Tamura’s employee locker at a Las Vegas Strip casino in their attempts to piece together why he killed ...

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

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

A man carrying a rifle killed four people at a New York City office tower Monday, including an off-duty New York City police ...

The attorney for the man who sold what would become the deadly weapon in a mass shooting in New York City earlier this week ...

A supervisor at the Las Vegas casino where Shane Devon Tamura worked legally purchased the gun used in the Midtown Manhattan ...

The gunman in the deadly shooting at a New York City office tower had a background in casino surveillance and once held a ...

New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's ...

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

The suspect in the shooting that took place in New York City today had driven from Las Vegas to New York and was known to ...

What we know about Tamura’s life, how he got the assault rifle that he used to kill an NYPD officer and three others, and the ...

Four people, including an off-duty New York City police officer, were killed Monday when a gunman carrying a rifle opened ...