California lawyer Michael Avenatti stole nearly $300,000 in book proceeds from porn star Stormy Daniels, a prosecutor told jurors as the once high-flying attorney's third criminal trial in two years began Monday.

Avenatti has insisted he is innocent of wire fraud and aggravated identify theft charges and his lawyers say he is likely to testify during the trial in Manhattan federal court.

Assistant U.S. Attorney Andrew Rohrbach told jurors that Avenatti lied repeatedly to steal nearly $300,000 from Daniels, whom Avenatti represented in 2018 in lawsuits against ex-President Donald Trump.

FILE - Adult film actress Stormy Daniels, left, stands with her lawyer Michael Avenatti during a news conference outside federal court in New York, April 16, 2018. Daniels, the porn star who catapulted Avenatti to fame, will get a starring role in a New York courtroom when prosecutors try to prove the California lawyer cheated her of $300,000 in book proceeds. (AP PhotoMary Altaffer, File)

FILE - Adult film actress Stormy Daniels, left, stands with her lawyer Michael Avenatti during a news conference outside federal court in New York, April 16, 2018. Daniels, the porn star who catapulted Avenatti to fame, will get a starring role in a New York courtroom when prosecutors try to prove the California lawyer cheated her of $300,000 in book proceeds. (AP PhotoMary Altaffer, File)

“This is a case about a lawyer who stole from his client, a lawyer who lied to cover up his scheme. That lawyer is the defendant Michael Avenatti,” Rohrbach said as he pointed at the 50-year-old on trial.

Defense attorney Andrew Dalack said his client didn't steal any money, and had a fee agreement to share any money from the book deal.

“This has no business in federal criminal court," Dalack said. “And Mr. Avenatti is not guilty.”

Michael Avenatti arrives to Federal court in Manhattan, Monday, Jan. 24, 2022, in New York. Avenatti, the once high-profile California attorney who regularly taunted then-President Donald Trump, was introduced to prospective jurors who will decide whether he cheated porn star Stormy Daniels out of hundreds of thousands of dollars. (AP PhotoJohn Minchillo)

Michael Avenatti arrives to Federal court in Manhattan, Monday, Jan. 24, 2022, in New York. Avenatti, the once high-profile California attorney who regularly taunted then-President Donald Trump, was introduced to prospective jurors who will decide whether he cheated porn star Stormy Daniels out of hundreds of thousands of dollars. (AP PhotoJohn Minchillo)

Dalack said Avenatti had “transformed a rather obscure adult entertainer into a household name" and given her hundreds of thousands of dollars only to be faced with false accusations from her.

But he said that was not uncommon for Daniels, who when she didn't "get her way, she turned on the people closest to her."

Avenatti was sentenced to 2 1/2 years in prison last year after being of trying to extort up to $25 million from sportswear giant Nike. He has not yet begun serving the sentence.

Avenatti is awaiting retrial in a California case — on charges that he cheated clients of millions of dollars — after a mistrial last year.