International political consultant W. Samuel Patten has been a “valuable resource” in his cooperation with multiple criminal investigations, prosecutors said in a Monday sentencing memorandum.

In the filing, D.C. federal prosecutors continued the practice of special counsel Robert Mueller, who referred the case, and declined to recommend a specific sentence.

And though there are no sentencing guidelines for the Foreign Agents Registration Act — the foreign lobbying statute that Patten pleaded guilty to violating — prosecutors write that Patten, through his cooperation, “has satisfied the criteria set forth in the guidelines for a departure.”

“Therefore, the government formally moves the Court for such a ‘departure’ in this case so that the Court’s ultimately sentence properly reflects Patten’s substantial assistance to the government,” prosecutors write in the April 8 sentencing memo.

Patten admitted in his August 2018 guilty plea to illegally facilitating a foreign contribution to the Trump inaugural committee, thereby procuring tickets for his Ukrainian clients and for his former business partner Konstantin Kilimnik, who the FBI purportedly assesses to be linked to Russian intelligence.

Prosecutors did not provide specific details about Patten’s cooperation in the filing, but wrote that he provided “helpful information about additional individuals and entities,” and that Patten had nine separate in person and over-the-phone meetings with the government.

“In all of these sessions, Patten has been honest and straightforward with government investigators,” the filing reads.

Patten will be sentenced by Judge Amy Berman Jackson on April 12. In addition to the inauguration scheme, he admitted to working with a Ukrainian political party that employed Paul Manafort to lobby its interests in the U.S.

In a filing earlier today, Patten asked for probation with no jail time.