Obama laughed off Trump's claim on Thursday at a Pentagon press conference, calling it "ridiculous" for the business mogul to even suggest.

ADVERTISEMENT “For someone whose career got jumpstarted by the Chicago machine I was surprised to hear him say that," Trump campaign chief Paul Manafort remarked Friday on Fox News's "America's Newsroom."

"Frankly we think that the situation in the country, just like with the DNC’s primaries, is a situation where if you rely on the Justice Department to ensure the security of elections, we have to be worried," he added.

The White House has rejected Trump's claim of the election being "rigged," which went beyond the outspoken billionaire's similar attacks on the political establishment.

“I don’t even really know where to start on answering this question,” Obama said Thursday. “Of course the elections will not be rigged. What does that mean?”