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 ...

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.

The 27-year-old Nevada man left a note at the scene voicing anger that his mental illness may be linked to his having played ...