Prosecutors with the Southern District of New York's public corruption unit reached out to the inaugural committee on Monday afternoon and told them about their plan to issue the subpoena, ABC News reported.
A lawyer for the committee received the subpoena on Monday evening, The New York Times reported, citing unnamed officials familiar with the probe.
Federal prosecutors have subpoenaed President Donald Trump's inaugural committee for documents that could link donors and the benefits received for such donations for the lavish 2017 inauguration.
Foreigners can not contribute money to inaugural committees, political campaigns, and PACs under US federal law.
It said that the president's daughter Ivanka Trump helped negotiate the deal, leading to concerns that the funds raised for the inauguration might have been illegally diverted into the Trump family business.
She didn't say who had subpoenaed the committee.
A spokesperson for the Southern District of NY did not respond to request for comment.
Rick Gates, who served as Barrack's deputy on the inaugural committee, has been cooperating with federal prosecutors examining Russian interference in the 2016 election. Longtime family accountant and Trump Organization chief financial officer Allen Weisselberg has agreed to cooperate, though the extent of his help is unknown. Manafort had been convicted of several felonies, and during one of his trials Gates acknowledged that it was possible he had submitted sham invoices to the inauguration committee seeking reimbursement.
"That doesn't have anything to do with the president or first lady", Sanders said.
A source speaking with CNN also noted that investigators were looking to determine whether donors paid vendors directly for anything related to the inauguration.
Gates also entered a plea deal with prosecutors to cooperate in the case against former Trump campaign chairman Paul Manafort, which led Mueller to dismiss almost two-dozen tax and bank fraud charges against Gates.
Last year, federal prosecutors seized hours of audio that Cohen had recorded, thousands of pages of records, and electronic devices that contained files of interest.