Gunman Shane Tamura fired nearly 50 shots Monday during his rampage on a Park Avenue skyscraper, where he killed an NYPD ...

The attorney for the man who sold what would become the deadly weapon in a mass shooting in New York City earlier this week ...

Authorities confiscated several items from a Las Vegas apartment tied to a gunman who used an AR-15-style rifle to kill four ...

Former Governor Steve Sisolak, a Democrat, signed the legislation, which Republicans opposed. Former Clark County Sheriff Joe ...

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 ...

Also killed in the massacre were Blackstone executive Wesley LePatner, security guard Aland Etienne and 36-year-old NYPD ...

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

Shane Tamura, a 27-year-old former high school football player from Las Vegas with a documented mental health history, was ...

Attorney Chris Rasmussen said the killer’s boss, Rick Ackley, “did everything right. The transfer was through a federal ...

NYPD said the gunman purchased the fully-assembled AR 15-style rifle used in the shooting from his supervisor.

The gunman who opened fire at a Manhattan office building Monday, killing four people before taking his own life, legally ...

Authorities probe the weapon origins in the Manhattan shooting by Shane Tamura, who bought a rifle from his supervisor.