Special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE is scrutinizing a breakfast event held shortly before President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE's inauguration, which was attended by Trump allies and foreign officials, according to a Monday Daily Beast report.

Federal prosecutors in Manhattan and the special counsel's team are looking into a breakfast attended by Rep. Devin Nunes (R-Calif.), former national security adviser Michael Flynn and dozens of foreign officials, three sources told the Daily Beast.

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The event took place at the Trump International Hotel around 8:30 a.m. on Jan. 18, 2017, before Trump officially took office, the online outlet reported.

Diplomats from dozens of countries were reportedly in attendance.

Mueller's office is looking into the breakfast as part of his probe into whether foreign donors illegally channeled money into Trump's inaugural fund and a pro-Trump super PAC, as first reported by The New York Times last month.

Prosecutors are probing whether the alleged donations were made in an attempt to buy influence over U.S. policy.

The investigation is focused on whether people from Middle Eastern countries, including Qatar, Saudi Arabia and the United Arab Emirates, disguised donations they made to both funds by using straw donors, the Times reported.

Nunes, the former House Intelligence Committee chairman, is a staunch ally of Trump. He has not been publicly accused of breaking any laws, but Democrats were deeply frustrated with his panel's handling of the Russian meddling investigation.

Flynn has pleaded guilty to lying to the FBI about his contact with Russians.

The breakfast was organized in part by the Pluvious Group, an organization that helped raise money for the Republican National Committee and the Trump campaign, according to the outlet. It was held the day after the Global Chairman's dinner, an exclusive event connected to the inauguration that was attended by many diplomats.