He also made false statements about his contacts with “a certain female Russian national” by saying such conversations were insignificant and took place before he joined the campaign, court documents said.

According to prosecutors, Papadopoulos “impeded the FBI’s ongoing investigation into the existence of any links or coordination between individuals associated with the campaign and the Russian government’s efforts to interfere with the 2016 presidential election.”

But prior to beginning his sentence, Papadopoulos had been on a Twitter tear complaining about the investigation. Last month, Papadopoulos told “Fox & Friends” that he was even “considering withdrawing” his agreement with the government after learning “certain information.”

Fox News’ Brooke Singman contributed to this report.