Who was Shane Tamura? Midtown Manhattan gunman’s NFL‑linked motive and CTE note revealed

Shane Devon Tamura, the 27‑year‑old Las Vegas man identified as the gunman behind the July 28 Midtown Manhattan shooting, killed four people—including off‑duty NYPD Officer Didarul Islam—and gravely injured one National Football League employee before taking his own life. Investigators say Tamura, who had previously been held twice under mental health crisis orders in Nevada, drove cross‑country with an M4‑style rifle and tactical gear to carry out the attack at 345 Park Avenue. A three‑page handwritten note blaming the NFL for causing chronic traumatic encephalopathy (CTE) was recovered from his pocket.

Authorities now believe Tamura intended to target the NFL’s headquarters in the building but mistakenly used the wrong elevator bank, arriving instead on the 33rd floor at Rudin Management’s offices.

How did surveillance footage and mayoral statements inform investigators about the shooter’s movements and actions inside the building lobby and elevators?

Surveillance footage reviewed by the New York Police Department (NYPD) captured Tamura arriving in a black BMW and double‑parking on Park Avenue shortly before 6:30 p.m. He entered the building’s lobby with a rifle, immediately firing on security staff, Blackstone executive Wesley LePatner, and Officer Didarul Islam. Officials said Tamura’s actions were deliberate but at one point he allowed a woman to pass unharmed from an elevator.

Police later determined Tamura boarded the wrong elevator bank. Commissioner Jessica Tisch stated that the 33rd floor where he ultimately took his own life was not the NFL’s office location, supporting investigators’ theory that the gunman’s intended target was never reached. Mayor Eric Adams said during a Tuesday briefing that the evidence suggested Tamura’s “navigation mistake” inadvertently limited further casualties.

What did the three‑page note found on Tamura reveal about his motivations, CTE allegations and hostility toward the NFL?

Commissioner Tisch confirmed that Tamura’s three‑page note referenced CTE, accused the NFL of profiting at the expense of players’ brain health, and requested his brain be studied after death. He cited the 2013 PBS Frontline documentary on CTE, mentioned former NFL player Terry Long, and wrote, “You can’t go against the NFL—they’ll squash you.” Tisch emphasized that although Tamura played football in high school, he had no ties to the professional league.

Medical experts consulted by investigators have said CTE can only be diagnosed post‑mortem. Tamura’s note, while indicating his belief he suffered from the degenerative brain disease, does not confirm a clinical diagnosis.

How did authorities trace Tamura’s firearm parts, vehicle contents and potential external assistance in the attack?

Following the shooting, NYPD and FBI agents executed a search warrant at Tamura’s Las Vegas residence and examined the BMW left on Park Avenue. They recovered ammunition, a revolver, electronic devices, prescription Zoloft, and cannabis. Officials confirmed part of the rifle used was assembled using components purchased by an associate now under questioning.

Investigators said the M4‑style rifle was semi‑automatic and equipped with a high‑capacity magazine. Federal agents are tracking the chain of custody of each part to determine whether anyone knowingly assisted Tamura.

How are New York leaders and the NFL responding after the Midtown Manhattan mass shooting shook the city?

Mayor Adams condemned the shooting as a “despicable, calculated attack” and pledged to review Midtown building security procedures. He also announced expanded trauma counseling for survivors and employees at 345 Park Avenue.

Governor Kathy Hochul described the tragedy as “a searing reminder of the national patchwork of gun laws” and renewed calls for a federal ban on assault‑style weapons. “New York’s laws cannot shield us when weapons are acquired elsewhere and carried here,” Hochul said.

NFL Commissioner Roger Goodell issued a company‑wide memo expressing condolences to the victims and confirming one NFL employee was hospitalized in critical but stable condition. He said the league would be enhancing security measures and offering grief resources to staff.

How do Tamura’s concealed carry permit and prior mental health crisis holds expose systemic gaps in firearm regulation and screening processes?

Records show Tamura was legally issued a concealed carry permit in Nevada in 2022, despite two documented mental health crisis holds in 2022 and 2024. Nevada law disqualifies individuals adjudicated mentally incompetent or involuntarily committed in the prior five years, but Tamura’s evaluations did not trigger those thresholds.

Gun control advocates have cited the case as evidence of loopholes that allow individuals with clear warning signs to obtain firearms. Mental health advocates likewise pointed to under‑funded crisis intervention systems, noting that brief emergency detentions often fail to link individuals to sustained treatment.

How were the victims commemorated by families, organizations and community leaders as part of the city’s mourning efforts?

The NYPD confirmed the victims included Officer Didarul Islam, who leaves behind a pregnant wife and two young sons, and Blackstone executive Wesley LePatner. Rudin Management confirmed the death of a long‑time employee but honored the family’s request for privacy. The fourth victim, security guard Aland Etienne, was remembered by colleagues as “a vigilant protector.”

Community leaders organized vigils across Manhattan, with religious groups and unions joining to support the victims’ families. The New York Police Benevolent Association issued a statement praising Officer Islam’s “heroic response in the face of unimaginable danger.”

What broader historical context around CTE awareness and NFL accountability is shaping the public conversation after the shooting?

The Midtown attack has renewed scrutiny of how concussions and repeated head impacts are addressed in American football. Public awareness of CTE grew after multiple high‑profile suicides among former NFL players, including Junior Seau and Terry Long, and subsequent research revealing the disease’s prevalence.

While Tamura never played professional football, his reference to CTE in the note has amplified calls for expanded mental health outreach for athletes at all levels. Legal analysts noted that the NFL has previously faced class‑action lawsuits related to brain injury settlements exceeding $1 billion.

What happens next as federal and local agencies continue investigating Tamura’s preparations and motivations?

As of Wednesday morning, 345 Park Avenue remains closed while forensic teams complete evidence collection. Investigators are reviewing Tamura’s phones and online activity for indications of additional planning or threats. FBI sources said they are also examining whether Tamura communicated his intentions to anyone in Nevada or en route to New York.

Commissioner Tisch reiterated that Tamura appeared to have acted alone but said the investigation was “far from over.” Mayor Adams pledged transparent public updates: “New Yorkers deserve full clarity about how this tragedy occurred and what can be done to prevent another.”