Lawyer Michael Avenatti, who attained national prominence as a legal antagonist of President Trump, has been arrested on federal bank fraud and wire fraud charges.

Prosecutors in California say he embezzled client money to pay his own expenses and debts.

Avenatti was arrested in New York on separate federal charges.

Authorities there say he tried to extract more than $20 million from shoe giant Nike by threatening to use his ability to attract public attention if the company failed to meet his financial demands.

Special counsel Robert Mueller's work is done, but the Russia imbroglio likely has a few more encores before the curtain closes.

Attorney General William Barr notified Congress on Sunday of a huge milestone in the saga: Mueller has submitted a report that did not find that President Trump's campaign conspired with the Russians who interfered in the 2016 election.

Updated at 6:56 p.m. ET

Special counsel Robert Mueller did not find evidence that President Trump's campaign conspired with Russia to influence the 2016 election, according to a summary of findings submitted to Congress by Attorney General William Barr.

"The Special Counsel's investigation did not find that the Trump campaign or anyone associated with it conspired or coordinated with Russia in its efforts to influence the 2016 U.S. presidential election," Barr wrote in a letter to leaders of the House and Senate judiciary committees on Sunday afternoon.