He fatally shot Officer Didarul Islam, 36, who was working a security detail, and then fired at others in the lobby, injuring several people, including a fifth victim – believed to be an NFL employee – who remains in critical condition.
The shooter then proceeded to the 33rd floor, where he killed another person and then fatally shot himself in the chest.
A multi-page note was discovered after Tamura’s death, and authorities revealed that it contained long-harbored grievances against the National Football League (NFL) and included explicit references to CTE, a brain disease linked to repeated head trauma.