Former President Donald Trump, the Republican nominee for president, visited Arlington National Cemetery on Monday to participate in a wreath-laying ceremony to mark the third anniversary of a suicide bombing at the Kabul, Afghanistan, airport that killed 13 U.S. service members.

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Former President Donald Trump, the Republican nominee for president, visited Arlington National Cemetery Monday to to participate in a wreath laying ceremony to mark the third anniversary of a suicide bombing at Kabul airport that killed 13 American service members. / Getty Images

Two members of Donald Trump's campaign staff had a verbal and physical altercation Monday with an official at Arlington National Cemetery, where the former president participated in a wreath-laying ceremony, NPR has learned.

A source with knowledge of the incident said the cemetery official tried to prevent Trump staffers from filming and photographing in a section where recent U.S. casualties are buried. The source said Arlington officials had made clear that only cemetery staff members would be authorized to take photographs or film in the area, known as Section 60.

When the cemetery official tried to prevent Trump campaign staff from entering Section 60, campaign staff verbally abused and pushed the official aside, according to the source.

Trump participated in an event to mark the third anniversary of a deadly attack on U.S. troops in Afghanistan as U.S. forces withdrew from the country; 13 U.S. service members were killed in the attack. The Trump campaign has blamed President Biden and Vice President Harris, now the Democratic presidential nominee, for the chaotic withdrawal.

In a statement to NPR, Steven Cheung, the Trump campaign's spokesman, strongly rejected the notion of a physical altercation, adding: "We are prepared to release footage if such defamatory claims are made.

"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," Cheung said in the statement.

The Trump campaign declined to make that footage immediately available.

In a statement to NPR, Arlington National Cemetery said it "can confirm there was an incident, and a report was filed."

"Federal law prohibits political campaign or election-related activities within Army National Military Cemeteries, to include photographers, content creators or any other persons attending for purposes, or in direct support of a partisan political candidate's campaign," according to the statement. "Arlington National Cemetery reinforced and widely shared this law and its prohibitions with all participants."