The US football league has previously faced legal challenges over its failure to address players’ concussions.
New York City Mayor Eric Adams has said that a gunman who killed five people, including himself, sought out the headquarters of the National Football League (NFL), which he blamed for the brain injuries he suffered from.
Adams said on Tuesday that a note carried by the shooter, identified as 27-year-old Shane Tamura, suggests his target was the NFL.
“The note alluded to that he felt he had CTE [chronic traumatic encephalopathy], a known brain injury for those who participate in contact sports,” Adams told CBS News. “He appeared to have blamed the NFL for his injury.”
But Tamura appears to have arrived at the wrong floor of a New York City office tower and instead opened fire in the offices of a real estate firm, on top of shooting people in the ground-floor lobby.
The NFL has previously faced litigation relating to concussions suffered by football players.
The organisation, which oversees professional US football, has denied any link between conditions like CTE and its sport, but it has nevertheless paid out more than $1bn to settle concussion-related lawsuits.
Monday’s shooting has also renewed debate about mass shootings and access to firearms in the US. Tamura reportedly entered the building with an AR-15-style rifle.
The NFL’s headquarters are located in a skyscraper that it shares with other firms.
Tamara is believed to have started shooting as he entered the lobby of the skyscraper. Then, police believe he took the wrong elevator, arriving at the 33rd floor, which contained the offices of Rudin Management, a real estate firm.
There, he opened fire once more and then took his own life.
Among those killed in the shooting was a 36-year-old police officer named Didarul Islam, who had come to the US from Bangladesh and had been on the force for three years.
Other victims include security guard Aland Etienne, Julia Hyman of Rudin Management, and an executive at the BlackRock investment firm, Wesley LePatner.
NFL commissioner Roger Goodell stated in a memo that there would be an “increased security presence” at the organisation’s offices over the coming weeks.
Tamura is a resident of Las Vegas, Nevada, with a history of mental health issues. He never played in the NFL, but he did play football in high school.
The news outlet Bloomberg reported that Tamura’s note alleges that his football career was cut short by a brain injury.
The note also called for his brain to be studied. CTE can only be diagnosed through an autopsy.
