A 27-year-old man, identified as Shane Tamura, killed four people and wounded a fifth person after opening fire at the NFL headquarters 345 Park Avenue building in New York City on Monday. According to police, after discovering a note in the pocket of the mass shooter, it is now revealed that he claimed to suffer from CTE and had an alleged vendetta against the NFL.
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At least 4-5 people, including a NYPD officer, have been killed after Shane Temura, a former football player out of Las Vegas, opened fire outside of 345 Park Street, a building that contains the HQ for Blackstone and the National Football League. https://t.co/ULdX9HmlUf
— William Petty (@WilliamP80326) July 29, 2025
Per reports, Tamura, who worked in Las Vegas Nevada, drove across the country with a semiautomatic rifle (M4 style weapon similar to the AR-15 assault rifle) and then carried out the grievous crime two hours after arriving in New York.
According to sources, he had a concealed carry permit, expired PI license, and mental health history, but no major criminal record.
New York City Mayor Eric Adams said (via FOX 5), "It appears as though he was going after the employees at the NFL."
In view of this, the NFL logo in the office building had multiple bullet holes, yet it appeared the gunman had taken the wrong elevator, reaching higher floors housing other company tenants before ending his own life on the 33rd floor.
When looking at Tamura's note that he left behind in his pocket, he accused the NFL of hiding the dangers to players' brains from playing the sport of football, with the sole purpose of wanting to maximize profits, per sources.
Furthermore, on the second page of his writing, he mentioned CTE and blamed it on football. That is, Tamura played high school football at Golden Valley High School in Santa Clarita, California, before later transferring to Granada Hills Charter school in Los Angeles.
MaxPreps and Hudl records list Tamura as a running back, cornerback and free safety.
Then on the third page of the note (per sources) he stated, "Study my brain please. I'm sorry."
There was even an excerpt referencing Pittsburgh Steelers former player Terry Long, who died by suicide in 2005 after drinking antifreeze.
"Terry Long football gave me CTE and it caused me to drink a gallon of antifreeze. You can't go against the NFL, they'll squash you."
New York City shooter Shane Tamura was once a high school football star, winning six awards and later playing in Canada.
The building he targeted today housed NFL headquarters. pic.twitter.com/FmythFKzF2
— Shadow of Ezra (@ShadowofEzra) July 29, 2025
Among the victims was an off-duty police officer and a NFL employee, as Commissioner Roger Goodell highlighted in a released statement.
"One of our employees was seriously injured in this attack. He is currently in the hospital and in stable condition," Goodell wrote. "NFL staff are at the hospital and we are supporting his family. We believe that all of our employees are otherwise safe and accounted for, and the building has nearly been cleared."
Related: NFL Employee Injured In Incident At League Office Building, Roger Goodell Says
