Federal prosecutors and special counselRobert Mueller’s office filed court documents on Friday that revealed new details about the government’s cooperation with Michael Cohen, President Donald Trump’s former personal lawyer, ahead of his sentencing next week.

The U.S. Attorney’s Office for the Southern District of New York submitted a sentencing memo for Cohen recommending a sentence of 42 months, while Mueller’s office said in its filing that Trump’s former attorney committed a serious crime but has made significant efforts to assist the special counsel’s office.

Cohen, 52, has been cooperating for months with Mueller’s investigation into Russian interference in the 2016 U.S. election, and Cohen’s attorneys revealed in their own sentencing memo last week that their client sat for seven interviews with Mueller’s team.

Mueller’s filing stated that Cohen provided information that was “credible and consistent with other evidence” the special counsel’s office had collected. The court document also outlined how Cohen assisted the special counsel’s office, including by providing “information about his own contacts with Russian interests during the campaign” and details on the Trump Organization’s real estate plans in Russia.

Cohen also told Mueller’s team that he was in contact with a Russian national who claimed to be politically influential and offered to help the Trump campaign make inroads with the Kremlin, according to the filing.

But the U.S. Attorney’s Office for the Southern District of New York’s filing rejected the idea that Cohen should receive leniency for his assistance, stating that Cohen had a “rose-colored view of the seriousness of the crimes.”

“After cheating the IRS for years, lying to banks and to Congress, and seeking to criminally influence the Presidential election, Cohen’s decision to plead guilty – rather than seek a pardon for his manifold crimes – does not make him a hero,” prosecutors said in the filing.