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The individual who entered a high-rise building in the heart of New York City on Monday evening reportedly had an issue with the NFL.
Shane Tamura, the man responsible for the deaths of multiple individuals including an NYPD officer in the incident at 345 Park Ave in Midtown Manhattan, referenced the NFL in a note discovered near his body on the 33rd floor of the building after his suicide, as reported by the New York Post.
A split image showing Shane Tamura as a football player in high school next to security footage. (Fox News; NY Post)
The 27-year-old Nevada resident attributed his issues to chronic traumatic encephalopathy (CTE), a condition resulting from repeated head trauma, caused by the sport of football, according to law enforcement sources cited by the outlet.
Fox News Digital reached out to the NYPD and the NFL for comments.
Tamura was a former high school football player at Granada Hills Charter in Granada Hills, California, located about 25 miles northwest of Los Angeles.
The NFL’s headquarters were situated in the same building where Tamura carried out the attack, resulting in the deaths of five people and injuries to several others. The league’s offices are on the fifth floor.
NYC Police Commissioner Jessica Tisch mentioned that Tamura had a history of mental health issues.
Tisch stated that Tamura had traveled across the country, with his vehicle last spotted in Columbia, New Jersey as recently as 4:24 p.m. ET, shortly before the shooting incident.

A New York police investigator exits her vehicle at the scene outside a Manhattan office building where two people were shot including a police officer, Monday, July 28, 2025, in New York. (AP Photo/Angelina Katsanis)
NFL Commissioner Roger Goodell sent a message to all league employees regarding the tragic event. One NFL employee was “seriously injured.”
“As has been widely reported, a gunman committed an unspeakable act of violence in our building at 345 Park Avenue. One of our employees was seriously injured in this attack,” the message read. “He is currently in the hospital and in stable condition. 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.”

The ambulance carrying the body of Didarul Islam exits NewYork-Presbyterian/Weill Cornell Medical Hospital during the dignified transfer of the slain officer, who was shot and killed by a gunman Monday evening, early Tuesday, July 29, 2025, in New York. (AP Photo/Angelina Katsanis)
Goodell advised everyone to pay attention to all emergency information notices, as the situation was still ongoing.
Fox News’ Scott Thompson contributed to this report.
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Ryan Gaydos is a senior editor for Fox News Digital.