(CNN) Deutsche Bank and several other banks were subpoenaed on Monday by the House Intelligence and Financial Services committees as part of House Democratic investigations into President Donald Trump's finances.

The full scope of the subpoenas to Deutsche Bank could not be determined. The subpoena is seeking information about loans Deutsche Bank gave to Trump and the Trump Organization, a person familiar with the matter told CNN.

House Intelligence Chairman Adam Schiff said the subpoenas were issued to Deutsche Bank and other financial institutions, and that Deutsche Bank requested a so-called "friendly subpoena" from the committees.

"As part of our oversight authority and authorized investigation into allegations of potential foreign influence on the U.S. political process, the House Intelligence Committee today issued subpoenas to multiple financial institutions in coordination with the House Financial Services Committee, including a friendly subpoena to Deutsche Bank, which has been cooperative with the Committees. We look forward to their continued cooperation and compliance," Schiff said in a statement.

House Financial Services Chairwoman Maxine Waters said in a separate statement: "The potential use of the U.S. financial system for illicit purposes is a very serious concern. The Financial Services Committee is exploring these matters, including as they may involve the President and his associates, as thoroughly as possible pursuant to its oversight authority, and will follow the facts wherever they may lead us."

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