Donald Trump has attacked a Republican 2020 rival over an extramarital affair during an early morning Twitter rant in which he also promoted a QAnon conspiracy theorist.
"When the former Governor of the Great State of South Carolina, @MarkSanford, was reported missing, only to then say he was away hiking on the Appalachian Trail, then was found in Argentina with his Flaming Dancer friend, it sounded like his political career was over," Mr Trump tweeted on Monday.
"It was but then he ran for Congress and won, only to lose his re-elect after I Tweeted my endorsement, on Election Day, for his opponent. But now take heart, he is back, and running for President of the United States. The Three Stooges, all badly failed candidates, will give it a go!"
Mark Sandford, who announced on Sunday he would run against Mr Trump in the Republican primaries, was at the centre of a scandal when as governor of South Carolina he went missing for a week in the summer of 2009.
Before his disappearance, he told staff he would be hiking the Appalachian Trail, but later admitted to an affair with an Argentinian journalist after he was caught arriving back in the US on a flight from Buenos Aires.
Mr Trump's use of "flaming dancer" seems to be a misspelling of "flamingo dancer", which the president appears to wrongly believe is the name for a Spanish dance which is actually called flamenco.