Hillary Clinton confirmed that documents taken from her campaign and published online this month are authentic, WikiLeaks said on Twitter.

"Clinton once again confirmed the authenticity of our documents with her response to WikiLeaks question," WikiLeaks said in a tweet during Wednesday evening's presidential debate. The group included a link to messages it said were obtained from campaign chairman John Podesta.

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Clinton spoke during the debate about comments she made during a private 2013 speech in support of "open trade and open borders." The statement came to light in October due to documents published by WikiLeaks.

"If you went on to read the rest of the sentence, I was talking about energy," Clinton said on Wednesday. "We trade more energy with our neighbors than we do with the rest of the world combined."

Clinton didn't deny the authenticity of the 2013 remarks, but instead called on Donald Trump to admit that the speech was obtained by Russian hackers. Trump declined, calling it a "great pivot" to deflect attention from her original comments.

Clinton's campaign refused to confirm the authenticity of documents published by WikiLeaks as recently as Wednesday afternoon. "We're not going to verify any of these right now because ... They're coming thousands a day," campaign manager Robby Mook told MSNBC host Chuck Todd. "It's simply too much for us to do that."