A medical examiner has confirmed that Shane Tamura, who killed four people in a Manhattan office tower this summer, was suffering from chronic traumatic encephalopathy. Tamura, a Las Vegas casino worker, shot himself in the chest after the July 28 shooting in a building housing NFL headquarters. The victims included a police officer, a security guard and two office workers. He accused the NFL of hiding evidence of brain injuries. A note found in Tamura's wallet revealed his self-diagnosis and urged the study of his brain. Tamura played high school football in California a decade ago but never played in the NFL.
