His AR-15 assault rifle, which he bought from a co-worker for $1,400, had a full clip of 15 bullets, police said.

Shane Tamura, a 27-year-old former high school athlete, has become the subject of a national homicide investigation following ...

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

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 ...

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

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 ...

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

A Las Vegas man, Shane Tamura, opened fire in a Midtown Manhattan office tower, killing four people before ending his own ...

Shane Tamura opened fire in a Manhattan building, killing four, including an NYPD officer and a Blackstone executive.

A man who killed four people at a Manhattan office building bought the rifle he used in the attack and the car he drove ...