The gunman who killed four people, including a New York City police officer, during a shooting Monday inside a Manhattan ...

On Monday night, police said he entered the skyscraper at 345 Park Avenue in Midtown Manhattan and immediately opened fire in ...

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

Former NYPD Sergeant Felipe Rodriguez weighs in on the gunman's actions and what we know about his background.

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

The man who killed four people at a Manhattan office building bought his AR-15-style rifle and getaway car from his Las Vegas ...

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

Investigators found also found 800 rounds and a 357-caliber handgun in a BMW the shooter drove to the scene, the NYPD said.

Authorities say the man who killed four people at a Manhattan office building bought the rifle he used in the attack and the ...

NYPD detectives, collaborating with Nevada authorities, are investigating the Park Avenue shooting carried out by Shane ...

The alleged gunman at a shooting rampage in a midtown Manhattan office building was identified as 27-year-old Shane Tamura, of Nevada.

Investigators found a note left by Midtown mass shooter Shane Tamura at his Nevada apartment saying he felt like a ...