When former President Donald Trump's campaign crew got into a "altercation" with cemetery staff about recording at the military burial site, a wreath-laying ceremony at Arlington National Cemetery turned tense.

Officials from the cemetery only disclosed that "there was an incident" and "a report was filed" in public.

An employee of the cemetery attempted to stop a campaign staffer who was trying to video in a restricted area. This event was first reported by NPR.

Despite the fact that federal law forbids political campaign activities on military cemetery property, the Trump campaign refuted the accusations and claimed to have secured permission to film from the families of slain service personnel.

Trump was at the memorial to honour the 13 US military service members who were killed during the US withdrawal from Afghanistan three years ago Monday.

An unnamed source told NPR that Trump staffers were attempting to film and photograph a section of the cemetery where the recent US casualties are buried.

Federal law restricts recording there. Trump staffers were told beforehand that they could not photograph or film that part of the grounds, cemetery officials said.

When the cemetery employee tried to stop the campaign from entering that section, campaign staff verbally abused and pushed the official aside, the unnamed source told NPR.

Trump's campaign has denied NPR's version of the story.

Steven Cheung, a Trump spokesperson, disputed that there was a physical altercation and said the campaign is prepared to release video to confirm their account.

"The fact is that a private photographer was permitted on the premises and for whatever reason an unnamed individual, clearly suffering from a mental health episode, decided to physically block members of President Trump's team during a very solemn ceremony," he said in a statement.

In a post on Truth Social, Trump shared a statement from family members of the fallen soldiers honoured at the event, expressing their approval.

“We had given our approval for President Trump’s official videographer and photographer to attend the event, ensuring these sacred moments of remembrance were respectfully captured and so we can cherish these memories forever,” the families said in Trump's Truth Social post.

But that goes against federal policy, an Arlington National Cemetery spokesperson told the BBC.

Federal law prohibits political campaign or election-related activities on the grounds of military cemeteries, including photographers, content creators or anyone directly supporting a partisan political candidate's campaign, the cemetery spokesperson said.