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Donald Trump has invited two eyebrow-raising guests to Wednesday’s presidential debate against Hillary Clinton: President Barack Obama’s estranged half-brother and the mother of an American official who died in Benghazi, Libya.

Malik Obama, the president’s half-brother, will be in Las Vegas on Wednesday for the third and final presidential debate — supporting Trump, who the president has widely criticized.

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Pat Smith, whose son Sean died in the 2012 attack on a diplomatic compound in Benghazi, will also be in attendance. Smith has been a vocal critic of Clinton and delivered a speech at the Republican National Convention in July.

Republicans have blamed Clinton for the tragic deaths of four American in Benghazi, though several congressional investigations have not found any evidence of it.

A senior campaign staffer confirmed that Obama and Smith would attend the debate. More surprise guests may be disclosed by the campaign later Wednesday.