"The Treasury Department’s inspector general is investigating whether confidential banking information involving a company controlled by President Trump’s personal attorney Michael Cohen was leaked..."

WaPo reports.

Detailed claims about the company’s banking history were made public Tuesday by Michael Avenatti, an attorney for Stormy Daniels, the adult-film star who was paid $130,000 by Cohen’s company shortly before the 2016 election to keep quiet about her alleged affair with Trump.

Inspector General Eric Thorson, who operates independently of the agency’s political leadership, launched the probe in response to media reports, said counsel Rich Delmar. It might — or might not — answer a question that was the source of much speculation Wednesday: How did Avenatti come into hard-to-get information touching on some of the most sensitive issues before the White House, including the probe led by special counsel Robert S. Mueller III?

On Twitter, Avenatti circulated a dossier purporting to show that Cohen received $500,000 last year from Columbus Nova, the U.S.-based affiliate of Renova Group, a company founded by Russian billionaire Viktor Vekselberg. The business magnate attended Trump’s inauguration and has reportedly been interviewed by Mueller’s prosecutors. Columbus Nova confirmed the payment, saying it was for consulting on investments and other matters, but denied any involvement by Vekselberg....