New York City Mayor Zohran Mamdani released 170,000 pages of long-guarded records on September 8, 2026, revealing that municipal officials misled the public about toxic air quality around Ground Zero following the September 11 terrorist attacks. According to the ABC News report, the document release via a new online portal coincides with the settlement of multi-year lawsuits brought by advocacy groups seeking government transparency 25 years after the disaster.
The Sept. 11 Public Records Portal and Legal Settlement
The publication resolves an Article 78 court challenge filed in 2024 by 9/11 Health Watch and executive director Ben Chevat. NYC Corporation Counsel Steven Banks stated that four mayoral administrations previously withheld documents detailing what the city government actually knew regarding hazardous chemicals in Lower Manhattan and Western Brooklyn.
Inside the Harding Memo and City Liability Warnings
Among the core records uncovered in the database is an October 2001 internal document known as the “Harding Memo,” written by then-Deputy Mayor Robert Harding. According to ABC News, the memo explicitly warned city leadership about massive legal liability tied to toxic exposures while officials simultaneously assured residents and workers that local air was safe to breathe. Additional records show the presence of asbestos on a building ledge at 15 John Street as late as July 2002, months after the initial collapse.

Impact on First Responders and Health Advocates
During a September 8 press conference at City Hall, Mayor Mamdani appeared alongside comedian and 9/11 health advocate Jon Stewart, first responders, and victim families. According to ABC News, Mamdani stated that people fell ill because trusted leaders misled them into believing toxic air conditions posed no danger.