Police: Casino supervisor sold gunman rifle used in NYC attack - ESPN

NEW YORK — A man who killed four people at a Manhattan office building bought the rifle he used in the attack and the car he drove across country from his supervisor at a Las Vegas casino, authorities said Wednesday.

Shane Tamura, 27, fatally shot three people in the lobby of the building that houses the National Football League's headquarters on Monday before taking an elevator to the 33rd floor and killing someone else before ending his own life, according to police. In a note found on his body, he claimed to have chronic traumatic encephalopathy, known at CTE, and accused the NFL of hiding the dangers of brain injuries linked to contact sports.

Tamura's supervisor at the Horseshoe Las Vegas legally bought the AR-15-style rifle he sold to Tamura for $1,400, the New York Police Department said Wednesday. On Tuesday, police mistakenly said the supervisor had supplied only parts of the rifle used in the attack, including the weapon's lower receiver. Tamura, who played high school football but never played in the NFL, worked in the surveillance department at the casino.

It wasn't immediately clear if the gun sale was legal. Tamura had a history of mental illness, police said, without going into detail. In September 2023, he was arrested on a misdemeanor trespassing charge at a suburban Las Vegas casino after being told to leave when he became agitated with security and other employees who asked him for his ID. Prosecutors later dismissed the case.

The supervisor who sold Tamura the rifle hasn't been charged with any crimes, police said. Authorities haven't released the supervisor's name, but they said he's the person Tamura apologized to in the note found in Tamura's wallet after he killed himself.

During a search of