The attempt to publish the op-ed under someone else's name now has prosecutors working for special counsel Robert Mueller pushing for Manafort to remain on house arrest and GPS monitoring for the time being.
An op-ed is an opinion essay written to be published in some form, usually on a website or in a newspaper or magazine. It is usually marked as representing the views of the writer and separated from news content.
The op-ed was being drafted as late as last week, prosecutors say. They did not name the colleague but noted the person is based in Russia.
Manafort is currently facing several felony charges involving allegations of money laundering and other financial crimes related to his political consulting work in Ukraine. Manafort has denied any wrongdoing. A trial is scheduled for next year.
More From This Section
Reached yesterday, a spokesman for Manafort declined comment on the op-ed described by prosecutors.
"Even if the ghostwritten op-ed were entirely accurate, fair, and balanced, it would be a violation of this Court's November 8 Order if it had been published," the prosecutors wrote.
"The editorial clearly was undertaken to influence the public's opinion of defendant Manafort, or else there would be no reason to seek its publication (much less for Manafort and his long-time associate to ghostwrite it in another's name)."
They added, "It compounds the problem that the proposed piece is not a dispassionate recitation of the facts."
At the time, Manafort was working to secure his release from home confinement by posting more than USD 10 million in bond, and according to court papers, he had reached a tentative agreement with the government.
But after discovering the op-ed, Mueller's team is now opposing Manafort's proposed bond agreement.
Prosecutors did not disclose the op-ed in court papers so as to prevent it from becoming public. They also did not disclose what name the ghostwritten op-ed would have been published under.
Manafort led the Trump campaign for several months, including during the Republican National Convention. Gates also worked in a senior role in the campaign.
Mueller has been leading a wide-ranging investigation into Russia's election interference and any coordination with Trump associates.