Shane Tamura, who killed four people at a Manhattan office building, was trying to target the NFL headquarters but took the wrong elevator, New York City Mayor Eric Adams said.

Tamura was targeting NFL headquarters: Investigators believe that he was trying to target the headquarters of the National Football League, but took the wrong elevator, Mayor Adams said. A rambling note found on his body suggested he had a grievance against the NFL over an unsubstantiated claim that he suffered from chronic traumatic encephalopathy.