George Papadopoulos, a former campaign aide for the Trump 2016 campaign, has been sentenced to 14 days in prison on charges of lying to federal agents investigating collusion between the campaign and Russia.
The prosecution claims that Mr Papadopoulos lied to investigators about his contact with Russians during the campaign “to minimize both his own role as a witness and the extent of the campaign’s knowledge of his contacts.”
Mr Papadopoulos also received a sentence of one year of supervised release and 200 hours of community service, as well as a fine of $US9500.
Mr Papadopoulos’ attorney, Thomas Breen, criticized US President Donald Trump in court, accusing him of hindering the Mueller investigation more than Mr Papadopoulos had.
“The president of the United States hindered this investigation more than George Papadopoulos ever could,” Mr Breen told the judge.
Meanwhile, two associates of longtime ally of Mr Trump, Roger Stone, have been questioned in the Mueller investigation about Mr Stone’s relationship with Wikileaks, who published damaging emails about Hillary Clinton during the campaign.
Randy Credico, a comedian and talk show host and Jerome Corsi, a right-wing commentator have both been questioned in the probe, with investigator examining the link between Mr Stone and Wikileaks.
Mueller’s office is trying to determine if Mr Stone had prior knowledge of the emails that were leaked, which US intelligence determined to have been sourced from Russian hackers.