Tesla CEO Elon Musk on Thursday took to Twitter to denounce as “utterly untrue” claims in a news report that he had sexually harassed a flight attendant on a private jet in 2016.

Earlier, it was reported that Musk’s SpaceX paid $250,000 in 2018 to settle a sexual harassment claim from an unnamed private jet flight attendant who accused Musk of exposing himself to her.

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The article quoted an anonymous person who said she was a friend of the flight attendant. The friend had provided a statement as part of the private settlement process, according to the article.

In a tweet, Musk said, “I have a challenge to this liar who claims their friend saw me ‘exposed’ – describe just one thing, anything at all (scars, tattoos, …) that isn’t known by the public. She won’t be able to do so, because it never happened.”

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In addition to this, Musk rubbed the flight attendant’s thigh and offered to buy her a horse if she would “do more” during an in-flight massage, Business Insider quoted the friend of the flight attendant as saying.

The flight attendant came to believe that her refusal to accept Musk’s proposal had hurt her opportunities to work at SpaceX and prompted her to hire a lawyer in 2018.

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The rocket company made the settlement out of court and included a nondisclosure agreement which prevented the flight attendant from speaking about it, Business Insider said.

On Wednesday, Musk said that he would vote Republican instead of Democrat, predicting a “dirty tricks campaign against me” would follow.

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On Thursday evening, Musk first tweeted: “The attacks against me should be viewed through a political lens – this is their standard (despicable) playbook – but nothing will deter me from fighting for a good future and your right to free speech.” In the initial tweet, he did not specifically mention the allegations in the Business Insider article.

“And, for the record, those wild accusations are utterly untrue,” Musk added in another tweet.

He also tweeted that the article was meant to interfere with the Twitter acquisition.