On the afternoon of the 23rd, around 1:30 PM, a substance resembling tear gas was sprayed at Shibuya Hikarie, a large multi-use complex located in Shibuya, Tokyo. This incident has resulted in 11 individuals reporting pain in their eyes and noses.
The Tokyo Metropolitan Police have apprehended a suspect believed to be responsible for the spraying and are currently investigating the circumstances surrounding the event.
Source: www3.nhk.or.jp