Special counsel Robert Mueller has asked Deutsche Bank AG to hand over information about transactions that could be linked to former national security adviser Michael Flynn.

Deutsche Bank AG received several subpoenas as part of Mueller’s probe into Russian meddling in the 2016 presidential election, and possible collusion with the Trump campaign.

According to the Wall Street Journal, Deutsche Bank is “continuing to provide information to authorities.”

A Deutsche Bank spokesman said the German lender “takes its legal obligations seriously and remains committed to cooperating with authorized investigations into this matter.”

Flynn, who resigned from the Trump administration in February, pleaded guilty earlier this month to lying to the FBI about his communications with Russians. Flynn is also allegedly cooperating with Mueller’s team.

The Wall Street Journal reported late Thursday that Deutsche Bank flagged roughly $30 million in “potentially suspicious transactions” as part of its internal investigation into how Trump campaign chairman Paul Manafort and his associates used the bank.

Manafort and his business partner, Rick Gates, surrendered to the FBI in October after the special counsel revealed both had been indicted for a variety of charges, including conspiracy to launder money. Both have pleaded not guilty.

Deutsche Bank also reportedly received subpoenas related the people or entities affiliated with with Trump.

Jay Sekulow, a spokesman for Trump’s legal team, said, “Deutsche Bank hasn’t received subpoenas on the president, the president’s businesses, or the president’s family.”