The White House has denied that President Donald Trump's financial records had been subpoenaed from Deutsche Bank by the special prosecutor examining allegations of Russian election meddling.
Mueller is investigating alleged Russian attempts to influence the 2016 USA presidential election and potential collusion by Trump aides.
An internal investigation carried out by Deutsche Bank didn't yield any evidence of connections between the client relationship with Trump and the bank's mirror trades affair, a person briefed on the matter said. "We have confirmed this with the bank and other sources".
Before Trump became president, the bank loaned the Trump Organization hundreds of millions of dollars for various real estate projects.
Bloomberg News and Handelsblatt reported yesterday that Mueller had subpoenaed the German lender to hand over financial information about Trump and members of his family.
During his election campaign, Mr Trump said he would seek to improve ties with Russian President Vladimir Putin, which were strained during former president Barack Obama's administration.
The Trump International Hotel is shown on August 10, 2017 in Washington.
The bank rejected demands in June by US House Democrats to provide details of Mr Trump's finances, citing privacy laws. Last week Michael Flynn, Trump's former national security adviser, pleaded guilty to a single count of making false statements to the Federal Bureau of Investigation.
"Trump was aware of the issue a couple of weeks before a conversation with then-FBI Director James B. Comey in which Comey said the president asked him if he could be lenient while investigating Flynn, whom Trump had just fired for misleading Pence about the nature of his conversations with the Russian", the Post said. Spending on the probe escalated rapidly as the investigation concluded, Government Accountability Office figures showed at the time. Over the weekend on Twitter, he attacked the Federal Bureau of Investigation and Mueller's team and defended some of Flynn's actions.
As of Tuesday morning, neither the White House or Trump had commented on the report.