The son of former Vice President Joe Biden engaged in millions of dollars in “questionable financial transactions” with associates and foreign individuals, including the wife of the former mayor of Moscow and people with ties to the Chinese Communist Party, according to a new congressional report.

Hunter Biden’s dealings raise conflict of interest concerns as well as concerns about crimes, counterintelligence, and extortion, according to the joint report from the Senate Homeland Security and Governmental Affairs Committee and Finance Committees.

“The records acquired by the committees show consistent, significant, and extensive financial connections among and between Hunter Biden, James Biden, Sara Biden, Devon Archer, and Chinese nationals connected to the communist regime and PLA [People’s Liberation Army] as well as other foreign nationals with questionable backgrounds,” according to the report, which was released Wednesday.

James Biden is Joe Biden’s brother; Sara Biden is James’s wife; and Archer is one of Hunter Biden’s business partners.

Biden was vice president until 2016. He is now the Democratic presidential nominee.ng-Pool/Getty Images)

Finance Chairman Chuck Grassley (R-Iowa) and Homeland Security Chairman Ron Johnson (R-Wis.) headed the investigation.

Key findings included learning that George Kent, a former deputy chief of mission at the U.S. Embassy in Kyiv, Ukraine, raised concerns to officials in Joe Biden’s office in early 2015 about the perception of a conflict of interest in Hunter Biden being on the board of Burisma, a Ukrainian company.

“The presence of Hunter Biden on the Burisma board was very awkward for all U.S. officials pushing an anticorruption agenda in Ukraine,” Kent wrote in an email the next year to colleagues.

The concerns were not addressed, according to the report.

In October 2015, State Department official Amos Hochstein raised concerns with Vice President Biden and Hunter Biden that the Burisma position enabled Russian disinformation efforts