NYC Park Avenue Gunman Reportedly Sought Help for Years for Frequent Headaches

The headaches reportedly got worse when he moved to Las Vegas in 2019.

August 3, 2025
A police officer stands by glass doors with yellow caution tape across the entrance. An escalator is visible inside.
Image via Kyle Mazza/Anadolu via Getty Images

The gunman who shot and killed four people in a Manhattan office building that houses the NFL’s headquarters had reportedly attempted to get medical help for persistent, debilitating headaches.

ESPN reports that Shane Tamura, 27, frequently met with doctors and a neurologist to get yearly MRI exams and treatments to diagnose the causes of the headaches and stop the pain, according to an anonymous source.

Tamura’s reportedly headaches began when he was in high school playing in Southern California. They continued when he became an adult, and he initially consumed over-the-counter treatments like acetaminophen and ibuprofen to deal with them.

When he moved to Las Vegas in 2019, Tamura reportedly began pursuing medical help to find relief.

"As it got worse and worse, it was like, 'OK, I have to get doctors' help now,’” the source told ESPN.

While in Nevada, the source said, Tamura was treated for depression and had been involuntarily held for mental reasons twice. The source said that they didn’t recall Tamura being angry at the NFL but that he would talk about how younger players needed better equipment and more safety.

While working at Horseshoe Casino and Hotel in Las Vegas, Tamura reportedly placed an ice pack on his forehead to deal with the headaches and sleep.

On July 28, Tamura fatally shot four people at 345 Park Avenue in Manhattan before dying from a self-inflicted gunshot wound. A note was found on his body that included mention of his time playing football and his claim of having chronic traumatic encephalopathy (CTE).

“He stated he had CTE, a brain injury known for those who played a contact sport of some nature," New York City Mayor Eric Adams told PIX11. "He seemed to have blamed the NFL.

“NFL headquarters was located in the building and he mistakenly went up the wrong elevator bank,” Adams continued. “As you know, in many of our corporate buildings based on the floors you want to get to you have to go to certain elevator banks, and he went on the wrong elevator bank which took him to Rudin Management.”

In a memo sent to NFL employees, Commissioner Roger Goodell called the shooting “an attack on humanity."