A 14-year-old girl has been left with potentially life-changing injuries after a suspected acid attack outside a school in west London.
A boy aged 16 and a 27-year-old woman were also injured after the substance, believed to be acidic, was thrown at pupils and a staff member outside Westminster Academy on Monday afternoon.
Police on patrol were flagged down by school staff following the incident in Alfred Road, Westbourne Park, at shortly after 4.40pm.
Both teenagers remain in hospital, with the boy’s injuries described as not life-threatening or life-changing.
The woman has since been discharged.
Scotland Yard said two officers were also taken to hospital as a precaution after they reported feeling unwell.
A spokesperson for the Met said: “Tests of the substance are ongoing. At this stage officers believe it to be acidic.
“Urgent inquiries are under way to identify and arrest those responsible.”
Westminster Academy remains closed on Tuesday, with lessons taking place online, according to a statement on its website.
Any witnesses or anyone with information is asked to call police on 101, quoting reference CAD 4987/30 Sept, or call Crimestoppers anonymously on 0800 555 111.