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Former Vice President Joe Biden's son Hunter Biden announced that he will resign at the end of the month from his role in the management company of a private equity fund backed by Chinese state-owned entities, according to a statement released Sunday by his attorney.

The announcement comes as President Trump continues to lash out at the Bidens amid a House impeachment inquiry into his attempts to pressure Ukrainian President Volodymyr Zelensky to investigate the former vice president during a July 25 phone call.

That call is the focus of a whistleblower complaint at the center of Democrats' probe.

Some background: Trump has pushed an unproven accusation that Joe Biden was improperly trying to help Hunter, who served on the board of a Ukrainian natural gas company, when the then-vice president pressured the Ukrainian government to fire the country's prosecutor general.

The Obama administration, American allies, the International Monetary Fund and Ukrainian anti-corruption activists, among others, had all made clear that they were displeased with the performance of Viktor Shokin, who became prosecutor general in 2015.

There is no evidence of wrongdoing by either Joe or Hunter Biden.