It now appears to be another poorly-sourced fake news story.
AFP reported late Tuesday that the subpoena sought information about Paul Manafort, the former Trump campaign official who was indicted in October.
Mueller is investigating alleged Russian attempts to influence the 2016 USA presidential election and potential collusion by Trump aides.
Congressional Democrats had been calling on the bank to provide more information on Trump's $300 million in debt, but they were rebuffed-as Deutsche Bank said that sharing client data would be illegal unless they received a formal request to do so.
The German news outlet references "several sources" where later reports only cite a single source.
The subpoena was earlier reported by German daily Handelsblatt. The bank agreed to submit documents "on its relationship with [President] Trump and his family", which go back nearly 20 years, according to an anonymous source.More news: Man Utd star Paul Pogba reveals why he used to support Arsenal
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President Donald Trump's personal lawyer John Dowd disputed that account, saying he had been told by Deutsche Bank that no such subpoena had been issued. "The subpoena concerns people or entities close to Mr. Trump", the Journal article said. Sekulow handles Constitutional Law litigation, specifically religious cases - not white-collar criminal defense so his position on the team is a head-scratcher.
The news caused major buzz, as Mueller looking at Trump's financial records, or those of Trump's family, was considered a "red line" to the president, and one not related to Mueller's investigation into alleged Russian hacking during the 2016 presidential campaign. This was the middle of the financial crisis, a fact Trump tried to leverage in court, arguing he should not have to repay money he owed Deutsche Bank because it was "one of the banks primarily responsible for the economic dysfunction we are now facing". Germany's largest bank received a subpoena from Special Counsel Robert Mueller several weeks ago to provide information on certain money and credit transactions, the person said, without giving details, adding that key documents had been handed over in the meantime.
Sarah Huckabee Sanders, the White House press secretary, insisted the Bloomberg report was wrong at her Tuesday press briefing.
"No-one from the VTB Group representatives has received a subpoena because there are absolutely no grounds for it", a bank representative said in response to a request from Reuters. This has the feel of a rushed-out story with a lack of editorial oversight.
But despite multiple United States media outlets reporting that Mr Mueller's investigation had expanded to include Mr Trump's personal financial records, one of the President's lawyers said that was not the case.
ABC News didn't even bother to mention the statement denying the existence of the subpoena.