Bolton, however, denied that the U.S. sent any money to North Korea, despite the country's insistence that the Trump administration pay Warmbier's medical bill.
When asked by the Fox News host if North Korea did in fact send the U.S. a bill for Warmier's medical care, the national security adviser went against Trump's previous denial and said, "it appears that they did. This occurred before I came into the administration, but that's my understanding."
Furthermore, Bolton leaked that the U.S. official, Joseph Yun, who was working with North Korea to secure the release of Warmbier had signed a document pledging that Washington would pay the outstanding medical bill.
However, Bolton was quick to point out that the U.S. did not pay any money to North Korea after making the pledge. "Absolutely not. And that's the key point," Bolton told the Fox News host.
A Washington Post article last week claimed North Korea sent the Trump administration a US$2 million bill for Otto Warmbier's medical care. Trump would later dismiss the claims, calling the Washington Post's report "fake news".