Acting White House chief of staff Mick Mulvaney Mick MulvaneyOn The Money: House panel pulls Powell into partisan battles | New York considers hiking taxes on the rich | Treasury: Trump's payroll tax deferral won't hurt Social Security Blockchain trade group names Mick Mulvaney to board Mick Mulvaney to start hedge fund MORE was reportedly left out of the meeting to plan for the raid in which ISIS leader Abu Bakr al-Baghdadi died.

NBC News, citing multiple unidentified current and former Trump administration officials, reports that Mulvaney did not find out about the special forces operation in Syria until after it was underway.

Mulvaney was informed of the raid Saturday night, after President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE had already tweeted that “something very big has just happened,” according to the network.

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The chief of staff would normally be central to such a massive undertaking to help coordinate public statements and inform congressional leaders and allies, NBC News noted, adding that Bill Daley, White House chief of staff under former President Obama, was in the Situation Room during the raid that killed Osama bin Laden.

A White House official told NBC News that Mulvaney was absent because the “operation began very quickly, and while he was not able to get to a secure location in time to participate, he was briefed on its success upon conclusion.”

Mulvaney was reportedly home in South Carolina when he learned of the raid.

The development comes amid reports that Trump is considering replacing his acting chief of staff. Trump has refuted those reports.

Trump also did not tell congressional leaders about the raid in advance, citing “Washington leaks.”

Democrats fumed at Trump’s decision to not inform them, as Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) and Senate Minority Leader Charles Schumer Chuck SchumerPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' 3 reasons why Biden is misreading the politics of court packing Cruz blocks amended resolution honoring Ginsburg over language about her dying wish MORE (D-N.Y.) did not learn about the raid until after it occurred.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellDemocratic senator to party: 'A little message discipline wouldn't kill us' House to vote on resolution affirming peaceful transition of power Republican lawyers brush off Trump's election comments MORE (R-Ky.) and House Minority Leader Kevin McCarthy Kevin Owen McCarthyHouse to vote on resolution affirming peaceful transition of power Ginsburg becomes the first woman to lie in state in the Capitol McCarthy says there will be a peaceful transition if Biden wins MORE (R-Calif.) were also not informed of the raid in advance.