Washington (CNN) Acting Attorney General Matt Whitaker is being accused by House Democrats of not repaying more than $9,000 in funds to a now-shuttered, "scam" patent company he was involved with so that the money can be returned to victims.

"We have obtained new documents showing that you failed to return thousands of dollars that were supposed to be distributed to the victims of World Patent Marketing's alleged fraud, despite your involvement...in handling complaints from individuals of the company's actions," four House committee chairman wrote in a letter to Whitaker dated Thursday.

The four chairmen -- Reps. Elijah Cummings of Oversight and Reform, Jerry Nadler of Judiciary, Adam Schiff of Intelligence and Frank Pallone of Energy and Commerce -- also wrote that Whitaker has failed to "provide a single document that we requested" back in November about his involvement with World Patent Marketing.

In November, Cummings released a statement that Whitaker's role at World Patent Marketing called into question serious concerns about his ability to be interim attorney general.



"These new documents suggest that Mr. Whitaker was personally aware of allegations of fraud by World Patent Marketing and its CEO at the same time he was receiving payments as a member of the Advisory Board," Cummings said.

CNN has reached out to the Justice Department for comment as well as lawyers for World Patent Marketing and has not yet received a response.

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