More than a decade before he turned a Midtown NYC office building into a killing ground, Shane Tamura stood out as a rising ...

Park Ave. gunman Shane Tamura bought the assault rifle he used to kill an NYPD cop and three civilians before taking his own life inside a Midtown Manhattan office building from a friend and co-worker ...

Shooter kills four in Midtown Manhattan leaves notes about NFL and CTE; authorities confirm targeted attack and call for gun ...

ABC News' Darren Reynolds contributed to this report. The 27-year-old man who allegedly shot and killed four people at a ...

Investigators say the suspect, armed with an M4-style rifle, may have blamed the league for head trauma he believed caused ...

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

Exclusive: The 27-year-old gunman would sometimes look ‘empty,’ or spaced-out, Tobenna Okunna told The Independent, adding, ...

The weapon allegedly used in the shooting at a New York City office building was made by Palmetto State Armory, a West ...

Explore the shocking events surrounding the NYPS case and uncover what pushed Shane Tamura to kill 4 people in Midtown ...

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