Billionaire Elon Musk took to Twitter late on Thursday to denounce as "utterly untrue" claims in a news report that he had sexually harassed a flight attendant on a private jet in 2016.

Business Insider reported earlier on Thursday that Musk's SpaceX paid US$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.

The article quoted an anonymous person who said she was a friend of the flight attendant. The friend had...