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

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

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

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

Tamura was a running back in high school and carried the ball 139 times for 774 rushing yards and 11 touchdowns as a junior ...

The man who stormed a Manhattan office tower with a gun, killing four people before killing himself, worked in the ...

Exclusive video shows SWAT teams executing a search warrant at the Las Vegas apartment of Shane Tamura, the man behind Monday ...

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

New York Police Department Commissioner Jessica Tisch said Tamura used an AR-15 style semiautomatic rifle in Monday’s ...

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