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

Among the dead were a police officer, a security guard and two people who worked at companies in the building. An NFL ...

There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on ...

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

NFL Commissioner Roger Goodell expressed sorrow following the deadly shooting at a New York City office building that left ...

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.

Police say a gunman who killed four people in a Manhattan skyscraper before taking his own life claimed to have a brain ...

Authorities confiscated items including gun paraphernalia and pill bottles from a Las Vegas apartment tied to a gunman who used an AR-15-style rifle to kill four people in Manhattan, according to ...

A former high school football player who opened fire in a Manhattan building Monday — killing four people before fatally ...

The degree of damage on the upper floor, where only one person was killed, shows how the sunglasses-sporting killer was spiraling out of control as his plan to get to the NFL offices inside 345 ...

Detectives flew to Las Vegas overnight, following the gun trail of the shooter and checking the store where the gunman brought a revolver last month.

The Las Vegas Metropolitan Police Department have not shared information regarding the mental health incidents in Southern ...