More than 20 people taken to hospital after unknown substance sprayed in Tokyo

More than 20 people have been taken to hospital after someone sprayed an unknown substance in Tokyo, authorities said.

• An unidentified substance was sprayed in a luxury shopping mall in Tokyo's Ginza district
• 19 people were hospitalized as a result of the incident
• Firefighters, police, and hazmat teams provided rapid response
• Investigations are ongoing to identify the chemical composition and source of the substance