Jurors should be allowed to hear a businessman’s nickname, “Putin’s chef,” at an upcoming trial involving allegations that Russian companies and individuals fraudulently used social media accounts to sow discord in the U.S. electorate leading up to the 2016 presidential election, federal prosecutors said in a court filing Wednesday.

That nickname is attached in U.S. and Russian media reports to Yevgeny Prigozhin, a businessman whom prosecutors have identified as the controlling officer of a Russian company called Concord Management and Consulting. Prosecutors in Washington charged Concord, Prigozhin and a dozen others in a wide-ranging case accusing Russians of posing as Americans on Twitter and Facebook and purchasing advertisements on social media with the goal of influencing the election in favor of President Donald Trump.