The 27 -year -old man who allegedly killed four people and wounded a fifth in a massive shooting in an building in the office of Central Manhattan on Monday wore a note in his pocket claiming that he suffered from CTE and asking that his brain be studied, they told ABC News.
The note also made references to the police. The shooting took place on Monday in 345 Park Ave., which houses, among other companies, the NFL headquarters.
“It seemed to have blamed the NFL for its injury,” said New York City Mayor Eric Adams, CBS on Tuesday.
CTE, or chronic traumatic encephalopathy, is a brain -related brain disease related in the head, often seen in veterans and military athletes, including soccer players, hockey players and boxers. CTE cannot be diagnosed in a living person with certainty, but doctors can suspect depending on the symptoms and history of trauma in the head.
A police officer and a civilian were shot in the center of Manhattan on Monday by a suspect who fled to an offices building, police sources told ABC News.
ABC News
The suspect, Shane Tamura, who the police said he has a documented mental health history, died for suicide in the offices of Rudin’s management, on the 33rd floor of the building, authorities said.
“He, from our preliminary investigation, took the wrong elevator bank to the NFL headquarters,” Adams said. “Instead, he took him to Rudin’s management, and that is where he made additional shootings and took the lives of additional employees.”
The fifth shooting victim who was taken to the hospital in critical condition is out of surgery and is stable on Tuesday morning, according to a source familiar with the state of the individual.
New York Police officers and other police officers expect the ambulance transfer of the killed officer of the New York Diar Islam police, who was killed during a massive shooting in the center of Manhattan, at the New York Medical Center/Weill Cornell in New York City, USA, July 29, 2025.
Bing Guan/Reuters
Sources of application of the law said that Tamura had two warehouses of mental health crisis in their background in Nevada, one in 2022 and the other in 2024. Those sustained generally allow a person to be arrested for up to 72 hours if they believe they are a danger to themselves or for others. According to a source, when there is this type of retention in Nevada, officers have to transport the person to the hospital. Once that happens, the medical staff takes over and decides how long to retain the person.
A Las Vegas police source said Tamura also obtained its CCW, or the hidden transport license, in 2022 and also has a previous arrest due to the state.
The only way to confirm CTE is through an autopsy of specialists looking for specific changes in the brain. Researchers analyze the post -mortem brain to look for changes in the Tau protein that define CTE. The disease causes symptoms, which generally appear years after trauma in the head, including memory loss, humor changes, confusion and problems of thinking clearly.
This is a development story. Consult the updates again.
Darren Reynolds and Liz Neporant of ABC News contributed to this report.
