
The gunman who police sayshot and killed four people in a New York City office buildingwas carrying a letter claiming he suffered from CTE when police found his body after he turned the gun on himself,according to multiple media reports. Shane Devon Tamura had whatpolice told the New York Timeswas a three-page letter in his wallet containing references to the NFL, which has its corporate headquarters in the Park Avenue building where the shooting took place on Monday, June 28. "He appeared to have blamed the NFL for his injury," New York CityMayor Eric Adams told "CBS Mornings" on Tuesday. Police sources told also ABC NewsTamura's note asked that his brain be studied for signs of CTE. Chronic traumatic encephalopathy (CTE)is a degenerative brain condition that happens after repeated head injuries. It is commonly associated with athletes who have endured repeated head trauma in sports such as football, which Tamurareportedlyplayed in high school. The New York Timesreported police said the note mentioned former Pittsburgh Steelers offensive linemanTerry Long, who was diagnosed with CTE. The note also referenced drinking "a gallon of antifreeze," which is what Long did in taking his own life in 2005. "Please study brain for CTE. I'm sorry," the Times reported the note said, according to excerpts released by police. Police say Tamura shot himself in the chest, not in the head. This article originally appeared on USA TODAY:Manhattan gunman's note asked for brain to be examined for CTE