US EditionNYC gunman who blamed NFL for hiding brain injury dangers suffered from sports concussion, mom said
MANHATTAN, NEW YORK CITY, AUG 6 – Shane Tamura, citing brain injury grievances against the NFL, killed four people including an off-duty officer before taking his own life, police said.
- On July 28, 2025, Shane Tamura, a 27-year-old former football player, opened fire inside a high-rise office building in Manhattan that houses the NFL, fatally shooting four individuals before taking his own life.
- Tamura’s background included ongoing struggles with mental health conditions such as depression and bipolar disorder, along with symptoms related to sports-related concussions, as reported by his mother and documented in police records.
- Police found a goodbye note in Tamura’s Las Vegas apartment where he accused the NFL of concealing brain injury dangers and requested his brain be studied for chronic traumatic encephalopathy .
- In 2022, Tamura’s mother informed authorities that he was receiving treatment for depression, symptoms related to a concussion, persistent migraines, and difficulty sleeping; at the time, he was also using sedatives, consuming marijuana, and carrying a firearm in his backpack.
- The shooting highlights concerns over mental health crises and firearm access amid new state laws allowing gun confiscation near those held for mental health emergencies.
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24 Articles
NYC shooter who targeted NFL headquarters to undergo brain examination for CTE
The New York City Medical Examiner’s Office has confirmed it will examine the brain of Shane Tamura—the gunman who fatally shot four people in a Manhattan office building last week—for signs of chronic traumatic encephalopathy (CTE), a degenerative brain disease linked to repeated head trauma. The test will be part of a full autopsy, expected to be completed in the coming weeks.
Hastings Tribune
Denver GazettePark Avenue mass shooter Shane Tamura polite during encounters with Las Vegas cops, video shows
NEW YORK — Park Avenue gunman Shane Tamura, who killed an NYPD cop and three civilians before taking his own life inside a Midtown Manhattan office building last week, was polite to cops during multiple encounters with the Las Vegas…
Manhattan Mass Shooter's Mom Told 911 He Was Being Treated for Sports-Related Concussions Before Targeting NFL: Cops
Shane Tamura speculated in a suicide note that he was suffering from CTE, a degenerative brain disease associated with sports-related head injuriesLas Vegas Metro PD; Kyle Mazza/Anadolu via GettyNEED TO KNOWShane Tamura carried out a mass shooting at the NFL headquarters in New York last weekIn his suicide note, he claimed to be suffering from CTE, a neurodegenerative disease associated with footballHis mother claimed in a 911 call from 2022 tha…
NYC gunman Shane Tamura seen angering police officers in bodycam video during 2023 arrest
Las Vegas police have released bodycam footage and 911 calls tied to alleged Manhattan mass shooter Shane Tamura — including video of officers responding to a mental health breakdown at his apartment and an arrest at a local casino. One 911 call came from Tamura’s mother, warning police that her son was suicidal.
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