Some clues are emerging in Las Vegas on the suspect linked to the shooting rampage at an office building in Manhattan where four died. CBS News' Tom Hanson reports.

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

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

Detectives searched the studio apartment of 27-year-old Shane Tamura, who shot five people on Monday before killing himself, ...

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

Dakota Hawver, a 26-year-old Reno resident, died in the overnight hours, police announced Thursday morning. Hawver had been ...

The four victims killed by Tamura have been identified as an NYPD officer, a Blackstone executive, a security guard, and a ...

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

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

A robotic dog was used to enter the Las Vegas home of the suspected New York gunman, who is accused of killing four people and himself in a shooting inside a Ma ...

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

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