A 15-year-old boy is being held by UK police after an acid attack in east London.
Six people were injured after a noxious substance was thrown in the middle of a busy shopping mall in Stratford on Saturday night (local time).
Police said the substance was thrown during a clash between two groups of males that moved from inside the shopping centre to the outside of the building.
Witnesses reported bystanders screaming in pain after being hit with liquid, with one person shouting: "I can't see, I can't see."
Police were called to the scene amid panic shortly before 8pm, where they say the offenders fled the scene.
Emergency services said six people were injured in the attack, with three hospitalised.
The incident is not being treated as terror-related, Scotland Yard said in a statement.