A consulting firm for Tokyo's Olympic bid committee paid around $370,000 to the son of Lamine Diack, once one of the world's most powerful sports officials, around the time Japan was picked to host the 2020 Games, Kyodo News has reported. The report comes amid French investigations into the former head of Tokyo's bid committee, Tsunekazu Takeda, for approving around $2 million in payments to Black Tidings, a now-defunct consulting firm in Singapore. The report said the findings, based on a review of financial documents as well as reporting by the International Consortium of Investigative Journalists and several media organisations…