Republican presidential nominee Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE said he doesn't want Anderson Cooper to moderate a presidential debate because he would be unfair.

In a new interview with Washington Post reporter Robert Costa, Trump made an “unprompted" comment about the CNN host.

ADVERTISEMENT

“I don’t think Anderson Cooper should be a moderator, because Anderson Cooper works for CNN and over the last couple of days, I’ve seen how Anderson Cooper behaves,” Trump said. “He’ll be very biased, very biased. I don’t think he should be a moderator.”

Trump said he would participate in the debate but accused CNN of having a bias in favor of his Democratic rival, Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE.

"CNN is the Clinton News Network and Anderson Cooper, I don’t think he can be fair,” Trump added.

The moderators for the three presidential debates were revealed by the non-partisan Commission on Presidential Debates earlier this month.

Cooper and ABC's Martha Raddatz will team up to cover the town hall-style debate on Oct. 9. NBC's Lester Holt will moderate the first debate, on Sept. 26, and Fox News’s Chris Wallace will host the third debate, on Oct 19.