'I know one thing — you will cover it in a very big fashion,' Trump said. | REUTERS Trump claims Obama bombshell

Donald Trump said on “Fox & Friends” Monday that he’ll reveal “very big” news about President Barack Obama by Wednesday but declined to give any hints about his plan.

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“Something very, very big concerning the president of the United States,” he said. “It’s going to be very big. I know one thing — you will cover it in a very big fashion.”

Trump, who said he will announce the news on Twitter “sometime probably Wednesday,” suggested it could “possibly” impact the election. The businessman, who considered a run for the White House but endorsed former Gov. Mitt Romney, has long been a high-profile Obama birther conspiracy theorist.

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Speaking later to TMZ.com, Trump said he would make the announcement around “noon” on Wednesday and declined to say whether he had talked to the Obama or Romney campaigns about what he intended to disclose.

“It’s a big fact,” Trump said. “I can’t talk about it ‘till Wednesday…We’ll see what happens.”