brian cheung, nbc news, minneapolis. >>> we have a lot to cover in our second hour of "chris jansing reports," let's get right to it. ♪♪ >>> at this hour, janet yellen'slomatic test, the treasury secretary arriving in china for a high-stakes trip. can she ease tensions? >>> plus, the search for a motive, new details about the mental state of the man accused of gunning down five people in philadelphia, including the posts that he made online. >>> inside the basement of mar-a-lago, what fbi agents saw on a surveillance camera that led to a search of the former president's property, and guns, gold bars, even wigs, stunning images of what russian authorities found while regulated the home of the wagner group's boss. reporters are following the latest developments. we begin though, with a mystery around yevgeny prigozhin and his army of mercenaries who were until now believed to be exiled to belarus after the armed revolt in russia. keir simmons is in belarus. according to belarus's president, this is not the case after all. bring us up to speed here. >> reporter: well, that's right. there are two things happening right now. kind of twin track, if you like