New reports suggest Shane Tamura dealt with multiple head injuries before attacking NFL headquarters in Manhattan, New York ...

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

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

The gunman who killed four people in a New York City shooting Monday was the son of a former Los Angeles Police Department ...

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

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada ...

The Las Vegas casino security supervisor who sold the assault-style rifle used in Monday's mass shooting in a Park Avenue office building complied with the law, his attorney said.

Live updates and developments about a shooting in New York City's Midtown. Five people, including the gunman and a police ...

A lone gunman walked into a midtown Manhattan office building Monday and opened fire, killing four people, including an NYPD ...

Police officers in New York City responded to reports of an active shooter in a midtown Manhattan building that houses ...

Officials say a man carrying a rifle killed four people at a New York City office tower. The shooting took place Monday ...

Four people died after a gunman opened fire in a Manhattan office building, and security footage showed the shooter calmly ...