https://abcnews.go.com/US/shane-tamura-gunman-shooting-nfl-headquarters-cte-medical/story?id=125972038 ABC News Live Video Shows Shop [ ][SUBMIT] Interest Successfully Added We'll notify you here with news about Turn on desktop notifications for breaking stories about interest? [ ]OffOn Stream on stream logo Shane Tamura, gunman in shooting at NFL headquarters, had CTE: Medical examiner Tamura killed four people in the shooting in July. ByAaron Katersky September 26, 2025, 2:20 PM * * * * [Shane-Tamu] 0:33 Shane Devon Tamura, 27, identified by the NYPD as the Midtown Manhattan office building shooter. Obtained by ABC News Shane Tamura, who drove cross-country from Las Vegas and opened fire at the New York headquarters of the NFL, killing four, had CTE, the New York City Office of the Chief Medical Examiner said Friday, confirming what was in the shooter's own writings. Police found a three-page note in Tamura's pocket claiming he had a traumatic brain injury and blaming the NFL for "concealing the dangers to players' brains to maximize profits." Elsewhere, Tamura wrote, "Study my brain please. I'm sorry." [Shane-Tamu] Shane Devon Tamura, 27, identified by the NYPD as the Midtown Manhattan office building shooter. Obtained by ABC News Tamura died of a self-inflicted gunshot wound. "Following a thorough assessment and extensive analysis by our neuropathology experts, OCME has found unambiguous diagnostic evidence of Chronic Traumatic Encephalopathy, also known as CTE, in the brain tissue of the decedent. The findings correspond with the classification of low-stage CTE, according to current consensus criteria," the medical examiner's office said. "CTE may be found in the brains of decedents with a history of repeated exposure to head trauma. The science around this condition continues to evolve, and the physical and mental manifestations of CTE remain under study," it continued. The medical examiner's office previously said Tamura died by suicide of a self-inflicted gunshot wound. The pathologists do not say whether CTE played a role. MORE: Manhattan shooting victims: NYPD officer, Blackstone executive among the 4 killed The NFL said in a statement, "We continue to grieve the senseless loss of lives, and our hearts remain with the victims' families and our dedicated employees." "There is no justification for the horrific acts that took place," the NFL statement continued. "As the medical examiner notes 'the science around this condition continues to evolve, and the physical and mental manifestations of CTE remain under study.'" Four people were killed in the shooting: Aland Etienne, a security guard for the building; Wesley LePatner, an executive at Blackstone who was a wife and mom; Didarul Islam, a police officer who was a dad of two; and Julia Hyman, a young employee at Rudin Management. All except for Hyman were killed in the building's lobby. All of the victims in the lobby were shot in less than 30 seconds. Popular Reads [tim-allen-] Tim Allen says Erika Kirk inspired him to forgive the man who killed his father * Sep 26, 11:42 AM [Al-Bari_17] Gymnast projected to make 2028 Olympic Games dies after training accident in Russia * Sep 26, 6:34 AM [thomas-2-a] Justice Clarence Thomas says legal precedents are not 'the gospel' * Sep 26, 11:57 AM Tamura then moved to the elevator bank, inexplicably allowing a woman to pass unharmed, police said. Detectives believe he went looking for the NFL offices but entered the wrong elevator. He ended up on the 33^rd floor about 6:28 p.m. In that time, office cleaner Sebije Nelovic said Tamura fired at her but missed. Nelovic said in a statement sent by her union that she ran down the hall, hid in a closet and "started praying." She said she heard shouting, then footsteps, as the gunman moved toward the closet where she was hiding. MORE: Office cleaner describes coming face-to-face with Manhattan shooting suspect As gunshots hit the closet door, Nelovic said she thought of Hyman, the 27-year-old who often worked late in the offices of Rudin Management, the company that operates the building. "I thought, 'God help her,'" Nelovic said. Hyman was the last person shot and killed before Tamura killed himself approximately four minutes after arriving on the 33^rd floor. All told, police said he fired 47 rounds, a number that indicates he reloaded once. --------------------------------------------------------------------- ABC News --------------------------------------------------------------------- Sponsored Content by Taboola Popular Reads [tim-allen-] Tim Allen says Erika Kirk inspired him to forgive the man who killed his father * Sep 26, 11:42 AM [Kristil-Kr] Husband revealed as stalker who murdered wife before Christmas * Sep 26, 6:01 AM [thomas-2-a] Justice Clarence Thomas says legal precedents are not 'the gospel' * Sep 26, 11:57 AM [Al-Bari_17] Gymnast projected to make 2028 Olympic Games dies after training accident in Russia * Sep 26, 6:34 AM ABC News Live ABC News Live 24/7 coverage of breaking news and live events ABC News Network Privacy Policy Your US State Privacy Rights Children's Online Privacy Policy Interest-Based Ads About Nielsen Measurement Terms of Use Do Not Sell or Share My Personal Information Contact Us (c) 2025 ABC News