Ex-Trump campaign manager Paul Manafort had multimillion-dollar contract with Russian oligarch, AP says

The report comes amid FBI investigation.

The AP reported there was a $10 million annual contract between Manafort and aluminum magnate Oleg Deripaska that is believed to have started in June 2006. The business relationship lasted until 2009, the AP said, citing a source.

Manafort denied any wrongdoing and said that his work with the oligarch did not relate to Putin or his government.

"I worked with Oleg Deripaska almost a decade ago representing him on business and personal matters in countries where he had investments," Manafort told ABC News today. "My work for Mr. Deripaska did not involve representing Russian political interests."

A senior White House official told ABC News not to expect any comment from the White House on the new AP report.

The AP report alleges that Manafort proposed a confidential strategic plan that suggested he would influence politics, business dealings and media coverage within the United States and elsewhere to benefit the Putin government.

Questions about Manafort's connections to Russia have been raised since August of 2016 when he resigned as the Trump campaign chairman, and have continued to come up as recently as this week.

ABC News’ John Santucci and Jordyn Phelps contributed to this report.