A gunman who killed four people at a Manhattan office building bought the rifle from his supervisor at a Las Vegas casino, ...

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

New York City investigators believe a co-worker of the Las Vegas man who killed four, including a police officer, provided a ...

The NYPD sent detectives to Las Vegas to work with federal law enforcement in the investigation into Monday's deadly shooting ...

Police are retracing Tamura's movements from Nevada to New York after a Midtown Manhattan shooting that left four people dead ...

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

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