The man who opened fire in a Midtown Manhattan office building, killing four people and wounding a fifth, appeared to be targeting the NFL headquarters and had a note claiming he suffered from CTE, police sources told ABC News.
Shane Tamura drove across the country with a semiautomatic rifle and then carried out a mass shooting on Monday in the building that’s home to the NFL’s offices, officials said. He died by suicide in the building.
Here’s the latest on the investigation:
Mass shooting in Midtown
Once Tamura entered 345 Park Avenue, “eerie” surveillance video captured him allowing a woman to walk out of the elevator, sparing her from being shot, New York City Mayor Eric Adams said.
“He allowed her to walk past him without any action at all,” Adams told CNN, but Tamura “shot one of the security guards who was behind the desk.”
At the end of the shooting rampage, Tamura died by suicide at the offices of Rudin Management, on the building’s 33rd floor, authorities said.
“It appears as though he was going after the employees at the NFL,” Adams said on FOX 5.
The gunman left bullet holes in a large NFL crest on the wall by one of the elevator banks.
It appeared Tamura “took the wrong elevator bank up to the NFL headquarters,” Adams told CBS. “Instead, it took him to Rudin Management, and that is where he carried out additional shootings and took the lives of additional employees.”
Four people were killed. Three have been identified: a security guard for the building; an executive at Blackstone who was a wife and mom; and a police officer who was a dad of two with a third on the way. The fourth worked at Rudin Management but has not been named, according to the family’s wishes.
A fifth shooting victim — an NFL employee, according to Commissioner Roger Goodell — was injured and taken to the hospital in critical condition, officials said. That victim was listed in stable condition on Tuesday morning, according to a source familiar with the individual’s status.
The shooter’s note
One page of the note found in Tamura’s pocket accused the NFL of concealing the dangers to players’ brains from playing football in order to maximize profits, sources said.
A second page mentioned CTE and blamed football. A third page asked, “Study my brain please. I’m sorry,” sources said.
CTE, or chronic traumatic encephalopathy, is a brain disease linked to repeated hits to the head, often seen in military veterans and athletes including football players, hockey players and boxers.
Tamura, 27, played high school football in Los Angeles but did not play professionally. He has no known connection to the NFL. It remains unknown if Tamura suffered from CTE, which can’t be diagnosed in a living person with certainty, but doctors may suspect it based on symptoms and a history of head trauma. Tamura’s brain will be examined as part of his autopsy, the New York City Office of the Chief Medical Examiner said.
What we know about the gunman
Tamura lived in Las Vegas where he was a surveillance department employee at the Horseshoe hotel and casino, a Horseshoe spokesperson said.
Police traced Tamura’s BMW’s movements through multiple states after it left Nevada on Saturday and entered New York on Monday, about two hours before the shooting, sources said.
Tamura had two Mental Health Crisis Holds in his background in Nevada, one in 2022 and the other in 2024, law enforcement sources said. Those holds typically allow a person to be detained for up to 72 hours if they are thought to be a danger to themselves or others. According to one source, when there is this type of hold in Nevada, officers have to transport the person to the hospital. Once that happens, medical staff take over and decide how long to hold the person.
The weapons
In Monday’s shooting, Tamura used an M4-style semiautomatic Palmetto State Armory PA-15 rifle equipped with a scope and a barrel flashlight, law enforcement sources told ABC News.
The M4 style weapon is similar to the AR-15 assault rifle and similar to the high-powered firearms widely used by the U.S. military in combat and training. While the military version of the M4 can be used as an automatic weapon, civilian firearms are legally barred from being automatic, so M4 style weapons sold to civilians are almost always semiautomatic.
In Tamura’s car at the time of the attack were a loaded Colt Python .357 caliber revolver, ammunition, medication and two cellphones, the sources said.
In June, someone at a gun show in Las Vegas called in a tip saying Tamura had purchased large amounts of ammunition and an aftermarket trigger, the sources said.
A Las Vegas police source said Tamura got his CCW, or concealed carry license, in 2022.
New York Gov. Kathy Hochul on Tuesday issued an impassioned statement pushing for an assault weapons ban.
“New York has some of the strongest gun laws in the nation. We banned assault weapons. We strengthened our Red Flag Law. We closed dangerous loopholes,” she said, adding that “our laws only go so far” when weapons from other states are brought to New York.
“The American people are tired of thoughts and prayers,” the governor said. “Congress must summon the courage to stand up to the gun lobby and finally pass a national assault weapons ban before more innocent lives are stolen.”
Hochul has ordered flags on all state government buildings to be flown at half-staff in honor of the victims.
“An attack on one of us is an attack on all of us, and we must confront this violence head on,” she said.
President Donald Trump wrote on social media on Tuesday that he’s been briefed “on the tragic shooting that took place in Manhattan, a place that I know and love.”
“I trust our Law Enforcement Agencies to get to the bottom of why this crazed lunatic committed such a senseless act of violence,” he wrote. “My heart is with the families of the four people who were killed, including the NYPD Officer, who made the ultimate sacrifice. God Bless the New York Police Department, and God Bless New York!”