Detailed text transcripts for TV channel - CNN - 20180903:09:45:00
Welcome back. new details this morning about the sonic attacks that caused u.s. personnel in china and cuba to suffer head injuries. the injuries were caused by microwa microwave ovens. we have patrick oppman with more. how did they come to this conclusion? >> reporter: this is a mystery still. this is the first time we heard from researchers coming out and saying they don't believe it is sonic weapons. sonic weapons don't work in the way they describe.