NYC gunman was targeting NFL headquarters, Mayor Adams says

The gunman who fatally shot four people inside a Midtown Manhattan office building was targeting NFL offices inside but took the wrong elevator bank, New York City Mayor Eric Adams said Tuesday morning.

Investigators found a note from the deceased gunman, Shane Tamura, in which he wrote about the brain trauma CTE, which is associated with head injuries in football. 

Adams said Tamura was a high school football player but never played in college or the NFL. 

"He did have a note on him. The note alluded to that he felt he had CTE, a known brain injury for those who participate in contact sports. He appeared to have blamed the NFL for his injury," the mayor said on "CBS Mornings." 

He also said a preliminary investigation shows that once Tamura entered the building Monday evening he "took the wrong elevator bank up to the NFL headquarters. Instead, it took him to Rudin Management, and that is where he carried out additional shootings and took the lives of additional employees."