NFL commissioner Roger Goodell said in a memo to league employees Tuesday night the New York office will remain closed through at least August 8 after a gunman attacked their headquarters building.The NFL Manhattan office at 345 Park Ave.

Shane Tamura, the Park Ave. gunman who killed an NYPD officer and three others before taking his own life, left behind a suicide note saying he suffered from CTE, a brain injury often linked to playing football, police sources said Tuesday.

Shane Tamura, the gunman who killed four in a Manhattan office, initially aimed for the NFL's headquarters but got lost. He carried a note blaming the NFL for his mental health issues, linking it to CTE,

The 27-year-old man who shot and killed four people at a Midtown office building on Monday carried a note in his pocket claiming he suffered from CTE, asked that his brain be studied and made references to the NFL.

Compared to what’s on the news, I don’t think any one of us, none of my teammates, sensed anything like this from Shane,” the former teammate told The Post.

Shane Tamura said he had CTE. His claim, which is unproven, has again put a spotlight on the NFL's troubling history with its players and the disease.

Shane Tamura, a former football player at Golden Valley and Granada Hills high schools, entered a New York skyscraper and began 'spraying' bullets, police say.

The Las Vegas man traveled across the country before entering the the Midtown building, which is home to investment company Blackstone and the NFL, police said.