The man who killed four people in the New York City skyscraper that is home to NFL headquarters carried a note blaming the league for the cognitive problems he developed as a high school football player.

The man who killed four people with a semi-automatic rifle while rampaging through a Midtown Manhattan office tower carried a note with him that appeared to blame the National Football League for his degenerative brain disease,

Shane Tamura, the Park Ave. gunman who killed an NYPD officer and three others before taking his own life, left behind a suicide note saying he suffered from CTE, a brain injury often linked to playing football, and was targeting the NFL — but took the wrong elevator, officials said Tuesday.

Police say a gunman who killed four people in a Manhattan skyscraper before taking his own life claimed to have a brain disease linked to contact sports and was trying to target the National Football

The gunman who opened fire in a Midtown Manhattan office building left a note that appeared to blame the National Football League for his brain injury, New York Mayor Eric Adams said on Tuesday.

The brain disease has most commonly been found in athletes in contact sports and others with a history of repeated brain trauma.

Shane Tamura said he had CTE. His claim, which is unproven, has again put a spotlight on the NFL's troubling history with its players and the disease.

The man who killed four people in a rampage with a rifle through a Midtown Manhattan office building was carrying a note that appeared to blame the National Football League for his degenerative brain disease,

Players and coaches around the NFL reacted with sadness Tuesday after the shooting at the NFL's New York City office killed four people. Brian Daboll of the New York Giants, Aaron Glenn of the Jets, Ben Johnson of the Chicago Bears and Raheem Morris of the Atlanta Falcons offered their thoughts and prayers to the victims of Monday's shooting.