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shane tamura

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Shane Tamura, a 27-year-old originally from Hawaii and most recently residing in Las Vegas, was identified as the gunman responsible for the mass shooting at 345 Park Avenue, Midtown Manhattan, on Monday evening. Tamura killed four people—including an NYPD officer—and critically wounded another before taking his own life[1][2][3][4][6].

Authorities stated Tamura drove across the country from Nevada, with his vehicle being tracked through Colorado, New Jersey, and finally into New York City just hours before the attack[1][6]. He entered the Park Avenue office building wearing body armor and carrying an AR-15-style rifle. In the lobby, Tamura shot an NYPD officer, a security guard, and others, then proceeded to the 33rd floor—home to Rudin Management—where he shot and killed a fourth victim before turning the weapon on himself[1][2][6]. His body was discovered by responding officers. The deceased victims included a police officer, two men, and a woman[1][2][6].

Police recovered from Tamura’s nearby Nevada-registered vehicle: a rifle case, a loaded revolver, multiple boxes of ammunition, magazines, prescription medication, and a backpack. The NYPD bomb squad cleared the vehicle of any explosives[1][6].

Tamura had a concealed firearm permit issued in Nevada in June 2022 (set to expire in 2027) and once held a private investigator’s license, though it had expired[1][3][4]. He had no significant criminal history, but authorities in Las Vegas noted a documented mental health history[1][2][4][6]. Police have not identified a motive, but a suicide note found in his pocket discussed his belief that he suffered from chronic traumatic encephalopathy (CTE)—a brain condition linked to head trauma among athletes—and referenced football, the NFL, and alleged mental decline, stating: “Terry Long football gave me CTE and it caused me to drink a gallon of antifreeze… Study my brain please I’m sorry… You can’t go against the NFL, they’ll squash you”[4].

Tamura had attended Granada Hills Charter High School in Los Angeles, where he played football, and also attended Golden Valley High School in Santa Clarita. Former coaches described him as a quiet and hardworking player[2]. Before the shooting, he worked as a security guard at a casino in Las Vegas[1][2].

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