Donald Trump has spent years telling increasingly vivid stories about what he did in the aftermath of September 11, 2001.

Now, one of his own relatives is publicly challenging those claims.

Fred Trump III, the president’s nephew and son of Trump’s late older brother Fred Trump Jr., has accused his uncle of misrepresenting key details about his connection to Ground Zero — including the claim that he brought construction crews to help in the days after the attacks.

The rebuke is striking not only because it comes from inside the Trump family, but because it lands just days before the 25th anniversary of 9/11.

“There are two reports out today that relate to the tragedy of 9/11,” Fred Trump III wrote on X, explaining that he wanted to address them before the anniversary itself.

Then he went directly at his uncle’s story.

“I try not to comment personally about my uncle,” he wrote, “but his claim that he brought a crew of workers to help at the site so offends me that I need to speak out.”

The dispute centers on several different versions of Trump’s 9/11 account.

In interviews shortly after the attacks, Trump said he had more than 100 workers helping in Lower Manhattan and that more were on the way.

Years later, he began telling a separate story about being inside or near the former U.S. Steel Building — now One Liberty Plaza — when firefighters feared the structure might collapse.

At a White House event this week, Trump described the building as “creaking” and said two firefighters physically grabbed him and carried him to safety.

“They literally lifted me up,” Trump said.

The problem is that Trump was at Trump Tower in Midtown Manhattan when the attacks occurred on September 11, roughly two and a half miles from the World Trade Center.

Trump has since argued that the dramatic evacuation episode happened later, during the days following the attacks.

But Fred Trump III says elements of that broader story still do not add up.

In his social-media post, he specifically challenged Trump’s assertion that he had a major construction project underway at the time.

“He was not,” Fred wrote.

He also disputed the image of a Trump-organized construction crew rushing downtown to help.

According to Fred, the employees available through Trump Tower would largely have been administrative staff.

“The only crew he claimed to bring to the site would have been secretarial and accounting employees from Trump Tower,” he wrote, adding that he knew many of them personally and did not believe they would have constituted the kind of construction force Trump has described.

Fred did make one concession: if they had been physically able to help, he believed many of them would have tried.

But his larger point was unmistakable.

The image of Donald Trump commanding a large crew of construction workers into Ground Zero, Fred argued, did not match what he knew about the Trump Organization at the time.

Then he turned to the building story.

Trump has repeatedly described the former U.S. Steel Building as dangerously unstable in the aftermath of 9/11.

This week, he said it was “really creaking” and that he and others feared it could collapse.

Fred Trump III pushed back on that account too.

He said the grandfather of a close friend had been one of the building’s original engineers and that another engineer connected to someone he knew was called to inspect the structure after the attacks.

While there had initially been concern about the building, Fred said it was ultimately cleared for occupancy.

His conclusion was direct:

It was not, in his telling, a structure that was “creaking and ready to fall.”

CNN has separately reported that there is no public evidence confirming Trump’s dramatic story that firefighters carried him from the building.

Trump, meanwhile, has responded aggressively to broader media scrutiny over his 9/11 accounts.

In a lengthy Truth Social post Tuesday, he insisted that he had been at Ground Zero shortly after the attacks and said his statements had been accurate.

That part is documented.

Video from September 13, 2001 shows Trump in Lower Manhattan discussing a visit to Ground Zero and describing the devastation.

But being present in Lower Manhattan days after the attacks does not automatically verify every later detail he has added to the story.

That distinction now sits at the heart of the controversy.

The White House has defended the president by saying he was recounting his experience of a city in crisis during the immediate aftermath of the attacks.

But when asked for evidence supporting the specific rescue account, a spokesperson did not provide documentation establishing that firefighters carried Trump from a threatened building.

Now the criticism is coming from someone who shares his last name.

Fred Trump III has already become one of the president’s most outspoken family critics, detailing his difficult relationship with the Trump family in his 2024 memoir, All in the Family.

Still, his decision to confront the president over September 11 carries a different kind of weight.

This is not a fight over business.

It is not a campaign dispute.

It concerns one of the darkest days in American history.

And as the country prepares to commemorate 25 years since nearly 3,000 people were killed, Trump’s nephew is making an unusually personal demand:

Separate memory from myth.

Because whatever happened in the chaotic days after September 11, Fred Trump III says at least one part of his uncle’s story simply was not true.