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

Shane Tamura, 27, who fatally shot four people in the building that houses the National Football League's headquarters Monday ...

Authorities say the man who killed four people at a Manhattan office building bought the rifle he used in the attack and the ...

The gunman who killed an NYPD officer and three other people in a Midtown building on Monday evening was carrying a note that ...

The man who stormed a Manhattan office tower with a gun worked in the surveillance department of a Las Vegas casino.

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

Police have identified the man who they say entered a Midtown Manhattan office building wearing body armor and opened fire, ...