The man behind Monday’s deadly Midtown Manhattan office tower shooting has been identified as Shane Devon Tamura, a 27-year-old licensed private investigator from Las Vegas whose once-promising life in football gave way to a dark spiral of mental health struggles and violent intent.
Authorities say Tamura, who had a documented history of mental illness, drove cross-country to carry out what police believe was a premeditated and suicidal attack. His journey began in Nevada, took him through Colorado on July 26, Nebraska on July 27, and New Jersey by Monday afternoon. Just hours later, he was striding through Midtown Manhattan with an M4 assault rifle in full view.
Tamura parked his black BMW a block from 345 Park Avenue — a high-security skyscraper home to Blackstone and the NFL’s headquarters — then walked calmly across a public plaza in a sport coat and button-down shirt, rifle by his side. His Nevada-issued concealed carry permit was on him as he entered the lobby.
Once inside, he opened fire. NYPD Officer Didarul Islam — working private security at the time — was shot in the back. A security guard who dove behind a desk was also hit. Tamura then made his way to the 33rd floor, where he killed again before taking his own life.
By the end of the rampage, four people were dead and another was fighting for their life.
A Grievance Against the NFL
Police recovered a handwritten note on Tamura’s body, seething with anger toward the NFL over its handling of chronic traumatic encephalopathy (CTE). In it, he claimed football had destroyed his brain:
“Terry Long football gave me CTE and it caused me to drink a gallon of antifreeze. You can’t go against the NFL — they’ll squash you. Study my brain please. I’m sorry. Tell Rick I’m sorry for everything.”
The reference was to Terry Long, the former Pittsburgh Steeler who died by suicide in 2006 after battling CTE.
Investigators are probing whether Tamura intended to storm the NFL’s offices — though he never reached the league’s floor.
From Promising Athlete to Isolated Gunman
Tamura grew up in Hawaii, immersed in football. In high school, he was a rising star — disciplined, focused, and a team leader. In 2015, after a game-winning performance for Granada Hills High in California, he spoke like a young man headed for better things:
“We were down 10-0, stayed disciplined and came together as a team. Couple of touchdowns.”
Friends and former coaches remember him as quiet, disciplined, and talented. Violence, they said, seemed unimaginable.
But the years that followed were shadowed by decline. Tamura moved to Las Vegas, secured a private investigator’s license, and obtained a legal concealed carry permit in June 2022. His personal life, however, largely vanished from public view.
The Final Descent
When investigators searched his car and belongings, they found a rifle case, ammunition, a loaded revolver, extra magazines, a backpack, and prescription medication.
NYPD officials say Tamura left no obvious criminal trail, but they suspect he had been building quiet resentments for years — grievances that metastasized into a plan for mass violence.
Former NYPD Deputy Commissioner John Miller believes the attack was his “last stand”:
“He fully intended to shoot his way through the lobby and make his way to that target — whatever that might have been.”
Midtown in Chaos
The shooting threw Midtown Manhattan into panic. Workers spilled into the streets with their hands up as police locked down surrounding buildings. Those still inside barricaded doors with furniture.
“People just started running,” recalled witness Anna Smith. “It was like a crowd panic. We had no idea what was going on.”
The NYPD, SWAT teams, and federal agents swarmed the skyscraper in a floor-by-floor search while the city’s emergency management issued alerts about road closures, subway delays, and disruptions near Grand Central Terminal.
The Investigation Continues
Police say Tamura acted alone but are working to ensure no one helped him plan or access the high-security building. They are combing through his phone, computer, and social media for signs of a manifesto or online threats.
“These cases often involve people who experience a downfall and begin to blame others — bosses, institutions, society,” Miller said. “Then they decide to get even with everybody. The problem usually begins and ends with themselves.”
For now, the motive remains part of an unfolding investigation — but the evidence points to a man who once played for glory on the football field, now remembered only for a rampage that brought terror to the heart of New York City.