Washington, D.C.: Former Trump campaign chairman Paul Manafort attended his second sentencing hearing in as many weeks, with a judge expected to tack on additional prison time beyond the roughly four-year punishment he has already received.

The judge said on Wednesday she’d give Manafort credit for accepting responsibility for his crimes when she determines his sentence.

Manafort, 69, sat in a wheelchair at the defence table next to his lawyers in federal court in Washington. He faces up to 10 additional years in prison when he is sentenced in special counsel Robert Mueller’s investigation into ties between the Trump campaign and Russia.

A judge in Virginia last week sentenced Manafort to 47 months in prison, far below sentencing guidelines that allowed for more than two decades in prison, prompting national debate about disparities in how rich and poor defendants are treated by the criminal justice system.

As US District Judge Amy Berman Jackson in Washington decides whether the sentences should run consecutively or at the same time, she is likely to take into account allegations by prosecutors that Manafort tampered with witnesses after he was charged and that he lied to investigators even after he pleaded guilty and pledged to cooperate.

A defendant in federal court normally can get a shorter sentence by pleading guilty and taking blame for his or her conduct. Berman Jackson said she would give Manafort some credit for having pleaded guilty in September to two counts of conspiracy.

The hearing may offer a window into tantalising allegations that aren’t part of the criminal cases against him but have nonetheless surfaced in recent court filings — that Manafort shared Trump campaign polling data with Konstantin Kilimnik, a business associate the US says has ties to Russian intelligence, and that the two men met secretly during the campaign in an encounter that prosecutors say cuts “to the heart” of their investigation.

The sentencing hearings for Manafort mark a bookend of sorts for Mueller’s investigation as it inches toward a conclusion. Manafort and business associate Rick Gates were among the first of 34 people charged, and though the charges against Manafort weren’t tied to his work on the Trump campaign, his foreign entanglements have made him a subject of intrigue to prosecutors assessing whether the campaign colluded with Russia to sway the outcome of the election.

Wednesday’s sentencing comes in a week of activity for the investigation. Mueller’s prosecutors on Tuesday night updated a judge on the status of cooperation provided by one defendant, former national security adviser Michael Flynn, and are expected to do the same later in the week for Gates.

The Mueller team has prosecuted Manafort in Washington and in Virginia related to his foreign consulting work on behalf of a pro-Russia Ukrainian political party. Manafort was convicted of bank and tax fraud in the Virginia case and pleaded guilty in Washington to two conspiracy counts, each punishable by up to five years in prison.

The decision by US District Judge T.S. Ellis III to sentence Manafort to 47 months stunned many who had been following the case given the guideline calculation of 19.5 to 24 years in prison and the fact the defendant was convicted of hiding millions of dollars from the IRS in undisclosed foreign bank accounts. But Ellis made clear during the sentencing hearing that he found the government’s sentencing guidelines unduly harsh and declared his own sentence “sufficiently punitive.”

“If anybody in this courtroom doesn’t think so, go and spend a day in the jail or penitentiary of the federal government,” Ellis said. “Spend a week there.”

Manafort has been jailed since last June, when Berman Jackson revoked his house arrest over allegations that he and Kilimnik sought to influence witnesses by trying to get them to testify in a certain way.