The alleged co-conspirator in the extortion case against celebrity lawyer Michael Avenatti is reportedly Mark Geragos, Clare Bronfman’s lead attorney.

While Geragos, 61, was not named in the criminal complaint against Avenatti, prosecutors say in court papers that an unnamed attorney joined Avenatti in demanding that Nike pay millions of dollars, or risk being embarrassed by a scandal involving its sponsorship of an amateur basketball team.

It is not known if Geragos has been charged with a crime.

A source knowledgeable about the case told the AP that the co-conspirator was Geragos.

The Wall Street Journal also reported that two sources said the co-conspirator, referred to in the indictment as “CC-1”, a California attorney “known for representation of celebrity and public figure clients,” is Geragos.

It is not known whether Geragos is cooperating with investigators.

According to reports regarding the indictment, Avenatti and a co-conspirator [Geragos] “allegedly threatened to hold a news conference on the eve of Nike’s quarterly earnings call and the start of the National Collegiate Athletic Association tournament to publicize alleged misconduct and maximize the damage such information could inflict on the company.”

If Nike’s lawyers wanted them to remain quiet, Avenatti allegedly said that he and Geragos would need to be paid between $15 million and $25 million to conduct an “internal investigation” into the athletic apparel company.

Avenatti said they would agree to a flat $22.5 million payment from Nike if the company did not want to keep them on retainer. $1.5 million of that amount was supposedly going to be paid to one of Avenatti’s clients.

Avenatti, who previously represented adult-film actress Stormy Daniels, was arrested Monday in the Southern District of NY – and charged in two federal cases with wire fraud, bank fraud and attempting to extort more than $20 million from Nike Inc.