NYC Gunman Kills 4, Leaves Note Citing Brain Disease, NFL Motive

On July 28, Shane Devon Tamura, a 27-year-old from Las Vegas with a documented mental health history, opened fire in a skyscraper at 345 Park Avenue in Manhattan, killing four people including an off-duty NYPD officer, Didarul Islam, and critically injuring another person before shooting himself. Tamura left behind a several-page note in which he blamed football for his struggle with chronic traumatic encephalopathy (CTE), a neurodegenerative disease linked to repeated head injuries, and requested that his brain be studied after his death. The building houses the NFL's corporate offices, among other firms, and an NFL employee was among those wounded. Authorities are investigating the note as a potential motive, with NFL Commissioner Roger Goodell condemning the attack and announcing increased security and grief counseling for employees. Mayor Eric Adams paid tribute to Officer Islam, describing him as a hero and expressing condolences to his family. The investigation remains ongoing as officials piece together Tamura's motives and mental health background.