White House spokesman Hogan Gidley said on Saturday that the US president would make a "major statement" on Sunday morning at 9 a.m. EST (1300 GMT).
Gidley gave no further details.
The announcement comes one hour after Trump tweeted that something "very big" had happened, sending Twitterians into a meltdown since the president did not elaborate.
Something very big has just happened!— Donald J. Trump (@realDonaldTrump) October 27, 2019
According to CNBC, the White House initially said that the statement was made by Special Assistant to the President and Deputy Press Secretary Judd Deere.