‘Everyone knew’: Zohran Mamdani releases 170K pages of 9/11 records revealing ‘disturbing’ aftermath

The documents contain a fraction of the air quality reports taken at Ground Zero, but they also include crucial internal memos
New York Mayor Zohran Mamdani speaks during a press conference on the release of 9/11 related documents at City Hall on September 08, 2026 in New York City (Michael M Santiago/Getty Images)
New York Mayor Zohran Mamdani speaks during a press conference on the release of 9/11 related documents at City Hall on September 08, 2026 in New York City (Michael M Santiago/Getty Images)

WASHINGTON, DC: New York City mayor Zohran Mamdani has released more than 170,000 pages of previously undisclosed 9/11 records that he says show city officials knew conditions around Ground Zero were unsafe even as the public received assurances about air quality.

Nearly 3,000 people were killed on 9/11, but thousands more, including first responders who spent months working at the site, have since died from 9/11-related cancers and other illnesses.

New document reveals NY officials lied about Ground Zero reality

As per the documents, officials knew that the air quality following the September 11, 2001, attacks and conditions around Ground Zero were unsafe to breathe despite repeated assurances to the public.

NEW YORK, NEW YORK - JUNE 30: Smoke from wildfires in Canada shrouds the Empire State Building on June 30, 2023 in New York City. The eastern U.S. is once again experiencing air quality concerns as smoke from Canadian wildfires billows south with New York City's air quality index reaching 162 in many places. (Photo by David Dee Delgado/Getty Images)
Nearly 3,000 people were killed on 9/11, but thousands more, have since died from 9/11-related cancers and other illnesses (David Dee Delgado/Getty Images)

Zohran Mamdani announced the release of the document by holding a press conference on Tuesday, September 8.

“As the years pass and the human toll grows, we reckon with the cost of September 11th whenever another New Yorker is stolen from us too soon,” Mamdani said.

“Now, close to 25 years later, more people have died from 9/11-related illnesses than were killed on the day itself.”

To help the affected people fight the disease developed due to the toxic environment caused by the catastrophic event, a federal healthcare program, the World Trade Center (WTC) Health Program, was established.

The program provides no-cost medical monitoring and treatment for certified physical and mental health conditions related to the September 11, 2001, terrorist attacks.

As per the 9/11 Memorial, at least 140,000 people from all 50 states have enrolled in the World Trade Center Health Program, and 49,000 have been diagnosed with certified WTC-related cancers.

394261 14: A fiery blasts rocks the World Trade Center after being hit by two planes September 11, 2
 A fiery blasts rocks the World Trade Center after being hit by two planes September 11, 2001 in New York City (Spencer Platt/Getty Images)

Notably, when the WTC fund was created in 2011 by Congress, cancer was not on the list of diseases to receive no-cost medical monitoring and treatment. Cancer was added to the list in 2012 after a fight by advocates and a study showing elevated cancer rates among New York firefighters at Ground Zero.

Officials knew they would receive lawsuits originating from toxic air

During the press conference, Mamdani said that more people are eligible for assistance than are currently enrolled, including residents who lived near the site but have not received outreach and those who live outside of New York.

In the document released, a fraction of the air quality reports taken at Ground Zero is included. The document also contains crucial internal memos, including what became known as the “Harding Memo” sent to then-Deputy Mayor Robert Harding.

As per this particular document, city officials knew they would receive thousands of lawsuits due to the 9/11 air exposure and the lack of proper safety equipment.

Democratic New York City mayoral candidate Zohran Mamdani (C) speaks during a campaign event with New York City elected officials on November 1, 2025 in the Queens borough of New York City. With only days left in the race for New York City's next mayor, Mamdani remains the front runner against Independent candidate, former New York Gov. Andrew Cuomo and Republican candidate Curtis Sliwa. (Photo by Stephanie Keith/Getty Images)
New York City mayor Zohran Mamdani speaks during a campaign event with New York City elected officials on November 1, 2025 in the Queens borough of New York City (Stephanie Keith/Getty Images)

“People got sick because the leaders they trusted lied and told them they were safe to breathe in toxic air,” Mamdani said.

When asked whether the years-long delay in releasing the documents was a “cover-up,” the mayor said, “This was multiple mayoral administrations refusing to release documents that New Yorkers were owed.”

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