President Donald Trump’s inaugural committee on Monday received a subpoena for documents from the Manhattan U.S. attorney’s office, which last year opened a criminal investigation into how the fund raised and spent more than $100 million on 2017 inauguration festivities, according to people familiar with the matter.

The subpoena requests documents related to the committee’s donors and spending, according to a copy viewed by The Wall Street Journal, including communications about payments made directly by donors to vendors — which would flout disclosure rules. Federal prosecutors are also seeking documents related to a Los Angeles financier who gave $900,000 to the committee through his private-equity firm and once registered as a foreign agent working on behalf of the Sri Lankan government.

A spokeswoman for the committee said in a statement Monday evening: “We have just received a subpoena for documents. While we are still reviewing the subpoena, it is our intention to cooperate with the inquiry.”

The subpoena escalates the inquiry into the Trump inaugural committee, which involved several of the president’s biggest campaign backers, and is one of several investigations into Trump’s associates. Special counsel Robert Mueller is separately investigating whether the Trump campaign colluded with Russia’s efforts to interfere in the 2016 U.S. election, which the president and Moscow have denied, and Manhattan federal prosecutors are probing the Trump Organization, the president’s family business. The Wall Street Journal reported in December that federal prosecutors in New York were in the early stages of a criminal investigation into the committee, which raised a record $107 million.

An expanded version of this report appears on WSJ.com.

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