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 ...

New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's ...

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

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

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 ...

Tamura was involuntarily held after being considered a danger to himself or others, according to a law-enforcement official.

Shane Devon Tamura was the 27-year-old man living in Las Vegas who fatally shot at least four people in a mass shooting at ...

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

The gunman, who said in a note he believed he had CTE, targeted skyscraper that houses the NFL's headquarters.

When I look into you and dad’s eyes, all I see is disappointment,” Tamura wrote to his mother in the note. “I love you, Momma ...