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Shane Devon Tamura leaves chilling suicide note claiming ‘CTE’ diagnosis, blasting NFL; 'They'll squash you'

Shane Devon Tamura, identified as the shooter at NFL HQ, left a note stating he suffered from CTE and wished for his brain to be examined.

Updated on: Jul 29, 2025, 15:43:17 IST
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Shane Devon Tamura, the shooter who opened fire inside the NFL's headquarters building in New York City on Monday, reportedly left a suicide note which claimed that he suffered from chronic traumatic encephalopathy (CTE) and wanted his brain to be examined.

Shane Tamura was identified by authorities as the main suspect in Manhattan incident that left four people, including police officer Didarul Islam, dead and one injured. (X/@RightGlockMom)
Shane Tamura was identified by authorities as the main suspect in Manhattan incident that left four people, including police officer Didarul Islam, dead and one injured. (X/@RightGlockMom)

Tamura, 27, was identified by authorities as the main suspect in the Manhattan incident that left four people, including police officer Didarul Islam, dead and one injured. According to authorities, the shooter died by suicide.

Citing an unnamed person familiar with the inquiry, CNN stated that a suicide note declaring that the suspect had CTE was found in his back pocket.

CNN reported that Tamura was a competitive football player in his younger years. The note stated, football “gave me CTE and it caused me to drink a gallon of antifreeze,” as per CNN.

“You can't go against the NFL, they'll squash you,” it added.

Also Read: How Shane Tamura got gun license, where was building security? Questions linger after NYC shooting

What is CTE?

CTE is a degenerative brain illness that has been associated with repetitive damage to the head, particularly concussions, frequent in contact sports like football.

While symptoms can be used to identify probable CTE in living people, a post mortem evaluation of the brain is necessary for confirmation since it involves examining brain tissue.

What NYC Police said

According to Police Commissioner Jessica Tisch, Tamura had a “documented mental health history” and his motive behind the shooting is being probed.

Tamura arrived at 345 Park Avenue in Midtown Manhattan just after the conclusion of work on Monday. He fired in the lobby and again on the 33rd floor before claiming his own life, as per Tisch.

Tamura had a handgun concealed-carry license and an outdated Nevada private investigator license, CNN reported, adding that he had no notable criminal history.

  • Shweta Kukreti
    ABOUT THE AUTHOR
    Shweta Kukreti

    Shweta Kukreti has over 8 years of experience in covering Indian and world politics. She joined the Hindustan Times in 2024 and is primarily assigned to the US desk. She currently works as Deputy Chief Content Producer and reports on a wide range of topics, including US politics, immigration issues (especially H-1B visa) and major global events. Shweta strongly emphasizes team operations, which encompasses monitoring news, delegating tasks, editing, developing comprehensive coverage strategies, and crafting engaging, and data-informed narratives. She received the Digi Star Award at the Hindustan Times within a year of joining for her broad coverage of US politics. In 2025, she earned both a promotion and a redesignation, a significant achievement recognising her contributions and the strong value she brings to the team. She has previously worked with the Indian Express, HTDS, ANI and Republic World. Seniors in all the media organisations recognised her work. Regarding education, she earned a BA (Hons.) in Political Science and a master's degree from Delhi University, and she pursued a PG Diploma in English Journalism from the Indian Institution of Mass Communication (IIMC). She also holds a diploma in Women's Empowerment and Development from IGNOU University and a French certification course from Alliance Française de Delhi. If not working, you can find her exploring the hills and engaging in adventurous activities in Rishikesh and Himachal Pradesh. She loves to play badminton, volleyball, and chess, and spend time with her friends and family. She also enjoys spiritual activities.Read More

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