Yuji Usui was arrested after allegedly throwing several dozen flyers from the window of a running subway train in the prefecture's capital of Nagoya on Friday, hours before the opening ceremony of the sporting event in Tokyo, the Kyodo news agency reported, citing the local police.
The Tokyo Olympics opened on Friday, with around 19,000 athletes taking part in the competitions. The opponents staged large-scale demonstrations across the Japanese capital that day, demanding the authorities to focus on COVID-19 response, not the Games.