Prosecutors asked a federal judge on Monday to sentence US President Donald Trump's longtime adviser Roger Stone to between seven and nine years in prison, saying such a term would "accurately reflect the seriousness of his crimes and promote respect for the law."

Also read: Trump adviser Roger Stone found guilty of lying to Congress, obstruction, witness tampering

Stone is due to face sentencing by US District Court Judge Amy Berman Jackson on February 20, after a jury in November found the self-proclaimed “dirty trickster” guilty on seven counts of lying to Congress, obstruction and witness tampering.

Also read: Former Trump adviser Roger Stone arrested after indictment by Robert Mueller

The government said that under US sentencing guidelines, he faces a range of seven years and three months to up to nine years, and told Jackson he "should be punished in accord" with those.

Stone is one of several people close to Trump who faced charges stemming from then-Special Counsel Robert Mueller's investigation into Russian interference in the 2016 presidential election.

During the trial, prosecutors pressed their case that Stone lied to lawmakers about his outreach to WikiLeaks - the website that disclosed many hacked Democratic emails ahead of the 2016 US election that proved embarrassing to Trump’s Democratic opponent Hillary Clinton - to protect Trump from looking bad.

Stone, who has labelled himself an “agent provocateur” and famously has the face of former President Richard Nixon tattooed on his back, was charged with obstructing justice, witness tampering and lying to the US House of Representatives' Intelligence Committee during its investigation into Russian election interference.

Stone's colourful trial featured references to the film “The Godfather Part II,” an impression of Senator Bernie Sanders by prosecution witness Randy Credico, and testimony by political heavyweights including former Trump campaign chief executive Steve Bannon and former Trump deputy campaign chairman Rick Gates.

Those witnesses said they believed Stone had inside information about when WikiLeaks might release more damaging emails about Clinton. In truth, he had no such information.

Stone was also accused of tampering with Credico's testimony when Credico was summoned to testify before Congress and speak with the FBI. In emails and texts, Stone told Credico among other things: “Prepare to die,” “You’re a rat. A stoolie,” and “Stonewall it.”