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 is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office ...

The NFL season kicked off at the annual Hall of Fame game with a moment of silence for the four people killed earlier this ...

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

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

Four people, including an off-duty New York City police officer, were killed Monday when a gunman carrying a rifle opened ...

"He comes with a machine gun. He's not going to know who I am. He's going to shoot, no matter what," Sebije Nelovic said in a ...

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

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

Questions emerge about the legality of a private gun sale between Shane Tamura and his supervisor Rick Ackley at Horseshoe Las Vegas after Tamura used the weapon in a deadly New York City shooting.

Nevada Gov. Joe Lombardo says mental health services, not gun laws, should be the focus following the NYC mass shooting that killed four people.