At least one person was taken to the hospital and around 20 others reported symptoms including throat pain after a man allegedly sprayed an unidentified substance near a commercial complex in Tokyo's Ginza shopping district on Monday, local media reported. A man wearing a black jacket, light-colored pants and a white mask was suspected of spraying a substance in the ATM area of a bank located on the first floor of the complex, the report said. 

The incident occurred in the heart of Ginza, an area lined with retailers and office buildings. Police are continuing to investigate the details of the case.