(CNN) The New York State Department of Financial Services has opened an inquiry into the Trump Organization's insurance practices, sending a subpoena Monday to the company's longtime insurance broker, according to a person familiar with the matter.

The nine-page subpoena, sent to Aon Plc, was issued days after President Donald Trump's former personal attorney Michael Cohen suggested in testimony to Congress that the Trump Organization had inflated the value of its assets, this person said.

A spokeswoman for Aon on Tuesday confirmed receipt of the subpoena.

"We can confirm that we received a subpoena from the New York State Department of Financial Services and, as is our policy, we intend to cooperate with all regulatory bodies," the spokeswoman, Donna Mirandola, said in a statement. "We do not comment on specific client matters."

A lawyer for the Trump Organization declined to comment to CNN.

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