The Guardian reported in July that executives at the bank were anticipating they would receive a formal demand for banking records about the president and had already established informal contacts with Mueller's investigators.
Special Counsel Robert Mueller departs after briefing the U.S. House Intelligence Committee on his investigation of potential collusion between Russian Federation and the Trump campaign on Capitol Hill in Washington, U.S., June 20, 2017.
In a statement Tuesday, attorney Jay Sekulow says such reporting is "false" and says "no subpoena has been issued or received".
That last one was just one piece of a broad campaign Trump undertook to hinder the Russian Federation investigation in general and the investigation of Flynn in particular, which reportedly included asking top officials in the intelligence community to pressure the FBI to shut it down and pressing Republican senators to end their own investigation.
Trump, his wife, daughter Ivanka and son-in-law Jared Kushner are understood to beclients of Deutsche Bank.
Sekulow was responding to a report from German business newspaper Handelsblatt that Mueller had subpoenaed records from Deutsche Bank as part of his investigation into possible Russian involvement in the USA presidential election campaign.
The German bank is one of the few major lenders that has lent large amounts to Trump in the past decade.
"Deutsche Bank's pattern of involvement in money laundering schemes with primarily Russian participation, its unconventional relationship with the president, and its repeated violations of US banking laws all raise serious question about whether the bank's reported reviews of the trading scheme and Trump's financial ties to Russia were completely thorough", they wrote. Mueller's subpoena to Deutsche Bank may be aimed at exploring those claims. "Over the years, I've looked at maybe doing a deal in Russian Federation, but I never did one". But the fact that Mueller is looking at Deutsche Bank means his probe is reaching the very heart of Trump's financial life.
Trump borrowed $640m in 2005 from the bank to build Trump International Hotel & Tower in Chicago.
The Trump family's dealings with Deutsche Bank have been a focus of opponents for months. Mueller incorporated several ongoing investigations within the Justice Department including those of Trump campaign contacts with Russian Federation, former Trump campaign chairman Paul Manafort's business activities and former national security adviser Michael Flynn.
In June Deutsche Bank cited privacy laws when it rejected a request by House Democrats to provide details of Trump's finances.