CTE Diagnosis Reveals Tragic Motive Behind NYC Office Shooting

According to the New York City medical examiner's office, the gunman responsible for a deadly shooting at an NYC office building in July 2025 had chronic traumatic encephalopathy (CTE), a degenerative brain disease connected to repeated head trauma. The suspect, identified as Shane Tamura, died by suicide following the attack that killed 4 people and critically injured 1 other.

Tamura's brain showed "unambiguous diagnostic evidence of CTE," a condition that has been found in many former athletes, including NFL players. A multi-page note found in Tamura's pocket claimed he was suffering from CTE related to his high school football days and accused the NFL of hiding the potential brain risks of the sport.

The victims of the shooting rampage included off-duty NYPD officer Didarul Islam, Blackstone executive Wesley LePatner, security officer Aland Etienne, and Rudin Management employee Julia Hyman. The critically injured victim was an NFL employee, according to Commissioner Roger Goodell.

The tragic incident has once again highlighted the dangers of CTE and the need for greater awareness and research into the long-term effects of head injuries in contact sports. As the NFL and other leagues continue to grapple with this issue, this case serves as a sobering reminder of the human toll that can result from ignoring the risks.