A judge on Wednesday dismissed the long-running case accusing US President Donald Trump and several associates of attempting to overturn the 2020 election results in the southern state of Georgia.

The ruling came after prosecutor Pete Skandalakis urged Fulton County Judge Scott McAfee to end the case, arguing it falls under federal, not state, jurisdiction – marking the collapse of the last of several criminal prosecutions targeting Trump before he returned to office in January.

The prosecutor referred in the 23-page filing to a federal investigation led by Special Counsel Jack Smith, who withdrew his own charges in late 2024 after Trump's re-election.

"Indeed, if Special Counsel Jack Smith, with all the resources of the federal government at his disposal... concluded that prosecution would be fruitless, then I too find that, despite the available evidence, pursuing the prosecution of all those involved in State of Georgia vs Donald Trump, et al on essentially federal grounds would be equally unproductive," Skandalakis wrote.

Skandalakis also pointed out that prosecuting a sitting president in Georgia is nearly impossible and that without Trump, the trial would be unworkable for the remaining 14 defendants.

McAfee immediately granted the motion to dismiss the case.

Trump and 18 co-defendants were charged with racketeering and other offences in Georgia in 2023 over their alleged efforts to subvert the results of the 2020 presidential election in the southern state.

The indictment alleged efforts to persuade state officials to "find" votes to reverse Trump's narrow loss to Joe Biden, pressure election workers, and install false Trump electors.

Four of those indicted subsequently admitted lesser charges. (AFP)