A man was arrested Saturday for allegedly unleashing a substance believed to be pepper spray in Tokyo's bustling Shibuya district, injuring 18 people, police said.The injured, including a newborn, suffered irritation to their eyes and throats, according to authorities.The suspect, a 46-year-old Tokyo resident, admitted to the allegations, saying that he discharged spray toward a man in his 40s after they bumped into each other on the bench, according to investigators and police.A report came in around 1:30 p.m. that a substance resembling pepper spray was released on the seventh floor of th…READ FULL ARTICLE