Andrew Cullen | Reuters

Michael Avenatti

The complaint says that last Wednesday, Avenatti and a cooperating witness spoke by phone with lawyers for Nike "during which Avenatti stated, with respect to his demands for payment of milions of dollars, that if those demands were not met 'I'll go take ten billion dollars off your client's market cap ... I'm not f---ing around.' "

Nike had no immediate comment.

In the Los Angeles case, Avenatti is accused of negotiating a $1.6 million settlement for a client in a civil case, but then giving the client "a bogus settlement agreement with a false payment date of March 10, 2018," according to the U.S. Attorney's Office in Los Angeles.

That office said "Avenatti misappropriated his client's settlement money and used it to pay expenses for his coffee business, Global Baristas US LLC, which operated Tully's Coffee stores in California and Washington state, as well as for his own expenses.:

"When the fake March 2018 deadline passed and the client asked where the money was, Avenatti continued to conceal that the payment had already been received, court documents said," according to prosecutors.

"Avenatti also allegedly defrauded a bank in Mississippi by submitting to the lender false tax returns in order to obtain three loans totaling $4.1 million for his law firm and coffee business in 2014," the L.A. U.S. Attorney's Office said.

"According to the affidavit, Avenatti obtained the loans by submitting fabricated individual income tax returns (Forms 1040) for 2011, 2012, and 2013, reporting substantial income even though he had never filed any such returns with the Internal Revenue Service," the prosecutor's office said. "The phony returns stated that he earned $4,562,881 in adjusted gross income in 2011, $5,423,099 in 2012, and $4,082,803 in 2013, according to the affidavit. Avenatti allegedly also claimed he paid $1.6 million in estimated tax payments to the IRS in 2012 and paid $1.25 million in 2013."

"In reality, Avenatti never filed personal income tax returns for 2011, 2012 and 2013 and did not make any estimated tax payments in 2012 and 2013. Instead of the millions of dollars he claimed to have paid in taxes, Avenatti still owed the IRS $850,438 in unpaid personal income tax plus interest and penalties for the tax years 2009 and 2010," the U.S. Attorney's Office said. "Avenatti also submitted a fictitious partnership tax return for his law firm."

Additional reporting by Kevin Breuninger of CNBC

Andrew Cullen | Reuters

Michael Avenatti

The complaint says that last Wednesday, Avenatti and a cooperating witness spoke by phone with lawyers for Nike "during which Avenatti stated, with respect to his demands for payment of milions of dollars, that if those demands were not met 'I'll go take ten billion dollars off your client's market cap ... I'm not f---ing around.' "

Nike had no immediate comment.

In the Los Angeles case, Avenatti is accused of negotiating a $1.6 million settlement for a client in a civil case, but then giving the client "a bogus settlement agreement with a false payment date of March 10, 2018," according to the U.S. Attorney's Office in Los Angeles.

That office said "Avenatti misappropriated his client's settlement money and used it to pay expenses for his coffee business, Global Baristas US LLC, which operated Tully's Coffee stores in California and Washington state, as well as for his own expenses.:

"When the fake March 2018 deadline passed and the client asked where the money was, Avenatti continued to conceal that the payment had already been received, court documents said," according to prosecutors.

"Avenatti also allegedly defrauded a bank in Mississippi by submitting to the lender false tax returns in order to obtain three loans totaling $4.1 million for his law firm and coffee business in 2014," the L.A. U.S. Attorney's Office said.

"According to the affidavit, Avenatti obtained the loans by submitting fabricated individual income tax returns (Forms 1040) for 2011, 2012, and 2013, reporting substantial income even though he had never filed any such returns with the Internal Revenue Service," the prosecutor's office said. "The phony returns stated that he earned $4,562,881 in adjusted gross income in 2011, $5,423,099 in 2012, and $4,082,803 in 2013, according to the affidavit. Avenatti allegedly also claimed he paid $1.6 million in estimated tax payments to the IRS in 2012 and paid $1.25 million in 2013."

"In reality, Avenatti never filed personal income tax returns for 2011, 2012 and 2013 and did not make any estimated tax payments in 2012 and 2013. Instead of the millions of dollars he claimed to have paid in taxes, Avenatti still owed the IRS $850,438 in unpaid personal income tax plus interest and penalties for the tax years 2009 and 2010," the U.S. Attorney's Office said. "Avenatti also submitted a fictitious partnership tax return for his law firm."

Additional reporting by Kevin Breuninger of CNBC