Michael Avenatti gestures while addressing the media outside the Ronald Reagan Federal Courthouse in Santa Ana, California on April 1, 2019, following his appearance at a US District Court on a criminal complaint charging him with bank and wire fraud.

Celebrity lawyer Michael Avenatti was slammed Thursday with a 36-count indictment by a federal grand jury in California that accuses him of ripping off clients— including a mentally ill paraplegic — for millions of dollars, shorting the IRS of millions more, swiping millions of dollars in employment taxes from his coffee company, and perjury.

The indictment comes more than two weeks after federal prosecutors in Los Angeles and New York hit the 48-year-old Avenatti with separate criminal complaints.

And it comes more than a year after the hyper-aggressive litigator first gained widespread notoriety for his representation of porn star Stormy Daniels in her legal tussles with President Donald Trump and his former personal lawyer and fixer Michael Cohen.

U.S. Attorney Nick Hanna of Los Angeles said that Avenatti's allegedly criminal conduct spanned four distinct areas, which "are all linked to one another because money generated from one set of crimes appears in other sets – typically in the form of payments to lull victims and to prevent Mr. Avenatti's financial house of cards from collapsing."

Ryan Korner, head of IRS criminal tax probes in Los Angeles, said that the money stolen by Avenatti through "a tangled financial web of lies" was "used to fund a lavish lifestyle which had no limits."

Korner said that IRS investigators started investigating Avenatti more than a year ago, but also said that Avenatti "began to run afoul of the IRS almost a decade ago" by failing to file income tax returns.

In the case in New York, Avenatti is accused of trying to extort up to $25 million from athletic shoe giant Nike by threatening to expose alleged bribery of amateur basketball players and their families unless the company coughed up cash to Avenatti and a client.

If convicted in the new California case, Avenatti faces a maximum possible sentence of 333 years in prison.

Reached for comment, Avenatti told CNBC in a text message, "For 20 years I have represented Davids vs. Goliaths and relied on due process and our system of justice."

"Along the way, I have made many powerful enemies. I am entitled to a FULL presumption of innocence and am confident that justice will be done once ALL of the facts are known," Avenatti added.

In a subsequent tweet, Avenatti said, "I intend to fully fight all charges and plead NOT GUILTY. I look forward to the entire truth being known as opposed to a one-sided version meant to sideline me." In another tweet, he wrote, "Any claim that any monies due clients were mishandled is bogus nonsense."

The new, 61-page indictment unsealed in U.S. District Court for the Central District of California in Santa Ana alleges that Avenatti for years hid and then completely spent a $4 million legal settlement obtained in January 2015 in favor of a mentally ill paraplegic client, and hid a $2.75 million settlement for another client that Aventatti allegedly used to help pay for his share of the purchase of a private jet valued at up to $5 million.

That jet was seized by federal authorities on Wednesday.

Most of the money for the paraplegic client, Geoffrey Ernest Johnson, allegedly was funnelled to a company that managed Avenatti's race-car team, and to his coffee company, Global Baristas, which operated the Tully's chain.

The indictment says that because Avenatti failed to respond to the U.S. Social Security Administration's request for information about his client, Johnson had his Supplemental Security Income benefits discontinued in February.

In all, five clients were allegedly ripped off for millions of dollars by Avenatti, who also is accused of using shell companies and other means to hide the purported thefts.

The grand jury said Avenatti "would misrepresent, conceal, and falsely describe to the clients the true terms of" the more than $12 million in settlements that he had obtained for them in their civil cases. And he would also allegedly lie to the clients by saying the settlements had not yet been paid, or that they were delayed for legitimate reasons.

The indictment said that in some cases, such as with Johnson, Avenatti would give a client funds which he claimed were "advances" on the "the purportedly yet-to-be received settlement proceeds."

Avenatti also is accused in the indictment of taking almost $2.4 million in employment taxes withheld from the paychecks of workers at Global Baristas.

And the indictment says that the last time he filed his federal income tax return was in 2011 for the 2010 filing year, and that he has also failed to file tax returns for his law firm.

Prosecutors said Avenatti failed to pay millions of dollars of taxes due the IRS.

In all, Avenatti is charged with 10 counts of wire fraud, 19 tax-related offenses, two counts of bank fraud, and four counts of bankruptcy fraud. The bankruptcy counts relate to allegedly false statements that Avenatti filed in connection with the bankruptcy of his law firm Eagan Avenatti.

Federal prosecutors in L.A. accused him in their prior complaint of defrauding a legal client by looting a $1.6 million civil settlement for that man to pay for Avenatti's personal and business expenses.

He was also accused in that case of defrauding a Mississippi bank by using bogus federal income tax returns to apply for and receive $4 million in loans.

The allegations in that complaint are restated in the indictment unsealed Thursday.

Josh Robbins, a lawyer for Avenatti's client Johnson, said in a statement: "Mr. Johnson is the victim of an appalling fraud perpetrated by the one person who owed him loyalty and honesty most of all: his own lawyer."

"Mr. Avenatti stole millions of dollars that were meant to compensate Mr. Johnson for a devastating injury, spent it on his own lavish lifestyle, then lied about it to Mr. Johnson for years to cover his tracks," Robbins said. "His actions have left Mr. Johnson destitute. Mr. Johnson is cooperating fully with the government's investigation, and hopes that justice will be done in this case."

Robbins, who previously was a prosecutor in the same office that has charged Avenatti, told CNBC that the case against him is "pretty damning."

"It's going to be a pretty difficult case for him to defend," Robbins said.