A three-year-old boy has been seriously injured in a suspected acid attack in a shop, police said.
The boy was “deliberately attacked” at Home Bargains in Worcester at 14:15 BST on Saturday, West Mercia Police said.
He is being treated in hospital for serious burns to his arm and face.
A 39-year-old man from Wolverhampton has been arrested in connection with the incident at Shrub Hill Retail Park, Tallow Hill.
Ch Supt Mark Travis described the incident as a “deliberate attack”.
Police released images taken from CCTV footage. “The three men in the photo may have information vital to our investigation”, Ch Supt Travis said.