NYC Shooting Last: Gunman mentioned CTE, it seemed to point to the NFL

The man who opened fire in an office building in the center of Manhattan, killing four people and wounding a fifth, seemed to be pointing to the NFL headquarters and had a note claiming that he suffered from CTE, police sources told ABC News.

Shane Tamura led throughout the country with a semi -automatic rifle and then carried out a mass shooting on Monday in the building that houses the NFL offices, authorities said. He died for suicide in the building.

Here is the latest in the investigation:

Mass shooting in Midtown

Once Tamura entered 345 Park Avenue, the surveillance video “Eerie” captured him allowing a woman to leave the elevator, preventing him from shooting her, said the mayor of New York City, Eric Adams.

“He allowed him to go through him without any action,” Adams told CNN, but Tamura “shot one of the security guards behind the desk.”

At the end of the Tamura fuss, Tamura died for suicide in the offices of the Rudin administration, on the 33rd floor of the building, authorities said.

“It seems that I was going after NFL employees,” Adams said in Fox 5.

The gunman left bullet holes on a large NFL crest on the wall by one of the elevator banks.

It seemed that Tamura “led the elevator bank wrong to the NFL headquarters,” Adams told CBS. “Instead, he took him to Rudin’s management, and that is where he made additional shootings and took the lives of additional employees.”

Four people were killed. Three have been identified: a security guard for the building; a Blackstone executive who was a wife and mother; and a police officer who was the father of two children with a third party. The fourth worked at Rudin Management, but has not been appointed, according to family wishes.

A fifth shooting victim, an NFL employee, according to Commissioner Roger Goodell, was injured and taken to the hospital in critical condition, authorities said. That victim appeared in stable condition on Tuesday morning, according to a source familiar with the state of the individual.

The shooter’s note

A page of the note found in Tamura’s pocket accused the NFL of hiding the dangers of players’ brains to play football to maximize profits, fountains said.

A second page mentioned CTE and blamed football. A third page asked: “Study my brain please. I’m sorry,” the fountains said.

CTE, or chronic traumatic encephalopathy, is a brain -related brain disease related in the head, often seen in veterans and military athletes, including soccer players, hockey players and boxers. CTE cannot be diagnosed in a living person with certainty, but doctors can suspect depending on the symptoms and history of trauma in the head. Symptoms include memory loss, mood changes, confusion and problems to think clearly.

Tamura, 27, played high school football in Los Angeles, but did not play professionally. The police have not found evidence that he has suffered a traumatic brain injury or had CTE, the sources said, and has no known connection with the NFL. Tamura’s brain will be examined as part of his autopsy, said the main forensic doctor’s office in New York City.

What we know about the armed man

Tamura lived in Las Vegas, where he was an employee of the surveillance department at the Hotel and Casino Hotel, said a spokesman for Horseshoe.

The police tracked the BMW movements of Tamura through several states after he left Nevada on Saturday and entered New York on Monday, approximately two hours before the shooting, fountains said.

Tamura had two mental health crises in his background in Nevada, one in 2022 and the other in 2024, sources of application of the law said. Those contained generally allow a person to be arrested for up to 72 hours if they believe they are a danger to themselves or for others. According to a source, when there is this type of retention in Nevada, officers have to transport the person to the hospital. Once that happens, the medical staff takes over and decides how long to retain the person.

Weapons

In Monday’s shooting, Tamura used a Semiautomatic State PA-15 rifle from the M4-style palmetto state equipped with a scope and a barrel flashlight, they told ABC News to ABC News.

The M4 style weapon is similar to the AR-15 assault rifle and similar to high-power firearms widely used by the US army in combat and training. Although the military version of the M4 can be used as an automatic weapon, civil guns are legally prohibited because they are automatic, so M4 -style weapons sold to civilians are almost always semi -automatic.

In Tamura’s car at the time of the attack there was a loaded Colt Python .357 revolver, ammunition, medications and two cell phones, the sources said.

In June, someone in a weapons show in Las Vegas called a advice by saying that Tamura had bought large amounts of ammunition and a trigger for the accessories market, the sources said.

A police source from Las Vegas said that Tamura obtained its CCW, or the hidden transport license, in 2022.

New York governor Kathy Hochul, issued a passionate statement by pressing a prohibition of assault weapons on Tuesday.

“New York has some of the strongest weapons laws of the nation. We prohibit assault weapons. We strengthen our red flag law. We close the dangerous gaps,” he said, and added that “our laws only get so far” when the weapons of other states take to New York.

“The American people are tired of thoughts and prayers,” said the governor. “Congress must convene courage to face the weapons lobby and finally approve a national assault weapons prohibition before more innocent lives are stolen.”

Hochul has ordered flags in all state government buildings that are flown in the middle of the staff in honor of the victims.

“An attack against one of us is an attack against all of us, and we must face this violence in front,” he said.

President Donald Trump wrote on social networks on Tuesday that he was informed “about the tragic shooting that took place in Manhattan, a place that I know and love.”

“I trust that our law enforcement agencies reach the bottom of why this crazy lunatic committed such an insensitive act of violence,” he wrote. “My heart is with the families of the four people who were killed, including the New York Police officer, who made the last sacrifice. God bless the New York Police Department, and God bless New York!”

This is a development story. Consult the updates again.

Darren Reynolds and Liz Neporant of ABC News contributed to this report.