https://www.washingtonpost.com/news/...te-speaks-out/
"Until now, Gratton has not spoken publicly about the case. He was never contacted by the U.S. government or the tour company that arranged the visit."
"Gratton said that in the four days they spent together, Warmbier never said anything about a banner and that he saw zero evidence that Warmbier was planning any such act ? quite the opposite. The first Gratton heard of the alleged attempted theft was when it was mentioned in news reports weeks later. Gratton and Warmbier weren?t together 24 hours each day, but they traveled together during the day and hung out each night."