A former Tokyo Olympic executive was served a fourth arrest warrant Wednesday for allegedly accepting bribes from a major ad agency and a company that sold officially licensed mascot toys.Prosecutors suspect Haruyuki Takahashi, 78, who has been at the center of a widening corruption scandal over the selection of sponsors for last year's Summer Games, received a total of around 54 million yen ($362,000) in cash from ad firm ADK Holdings Inc. and stuffed toy maker Sun Arrow Inc.Tokyo prosecutors also arrested ADK Holdings President Shinichi Ueno, 68, and two others for allegedly bribing Takah…READ FULL ARTICLE