Adams told reporters that investigators believe Shane Tamura of Las Vegas entered the building with the intent to reach the NFL 's offices but accessed the wrong set of elevator banks. "He seemed to have blamed the NFL ," Adams said. "The NFL headquarters was located in the building, and he mistakenly went up the wrong elevator bank."

New York City Mayor Eric Adams revealed Shane Tamura was targeting the NFL headquarters in his shooting. Tamura opened fire in a Midtown Manhattan office building, killing four and wounding one. He had a note claiming he suffered from CTE, as he committed suicide after the shooting.

The gunman, who said in a note he believed he had CTE, targeted skyscraper that houses the NFL's headquarters.