Donald Trump
U.S. Republican presidential candidate Donald Trump speaks to the media before heading over the Iowa State Fair in Des Moines, Iowa, United States, August 15, 2015.REUTERS/Jim Young

It appears Republican presidential candidate Donald Trump is still not over being upset at Fox News journalist Megyn Kelly. The GOP front-runner took to Twitter on 24 August to bash Kelly after she came back from vacation to host her hit show The Kelly File.

Trump tweeted that Kelly was "off her game" and that she must have had a "terrible vacation".

The real estate mogul turned presidential candidate went on to retweet several disparaging comments against Kelly from fellow Kelly File viewers. One commenter, under the username @mstanish53, tweeted: "The bimbo back in town. I hope not for long."

The Washington Post noted that this is not the first time Trump has retweeted supporters calling Kelly a bimbo. These very comments are what Kelly questioned him about in the first place during the 6 August debate.

However, his recent tirade against the Fox News anchor had at least one executive at the network saying he had gone too far. In a statement released on 25 August, Fox News Chairman and CEO Roger Ailes said that Trump's attack on Kelly was "bullying" and "is as unacceptable as it is disturbing."

Ailes wrote:

Donald Trump's surprise and unprovoked attack on Megyn Kelly during her show last night is as unacceptable as it is disturbing. Megyn Kelly represents the very best of American journalism and all of us at FOX News Channel reject the crude and irresponsible attempts to suggest otherwise. I could not be more proud of Megyn for her professionalism and class in the face of all of Mr. Trump's verbal assaults. Her questioning of Mr. Trump at the debate was tough but fair, and I fully support her as she continues to ask the probing and challenging questions that all presidential candidates may find difficult to answer. Donald Trump rarely apologizes, although in this case, he should. We have never been deterred by politicians or anyone else attacking us for doing our job, much less allowed ourselves to be bullied by anyone and we're certainly not going to start now. All of our journalists will continue to report in the fair and balanced way that has made FOX News Channel the number one news network in the industry.

The Donald, however, seemed unfazed by Ailes's comments. He continued to tweet about his campaign and sending words of support to the three Americans who were involved in stopping a gunman on a train headed to Paris.