U.S. Secretary of State Mike Pompeo on Saturday accused a National Public Radio reporter of lying to him and violating "the basic rules of journalism and decency" after she said Pompeo repeatedly cursed at her following a testy interview.

NPR reporter Mary Louise Kelly said on Friday that Pompeo cursed at her and repeatedly "used the F-word" in a shouted diatribe after she questioned him about Ukraine and the ousted American ambassador to Kiev during a nine-minute interview.

Pompeo, who is due to make an official visit to Ukraine on Thursday, said in a statement on Saturday that Kelly had lied to him twice — once in setting up the interview, and then again in agreeing to conduct their post-interview conversation off the record.