Two constabulary officers were taken to infirmary aft being "exposed to a substance believed to beryllium alkaline" during an incidental astatine Surbiton station.
Two boys, aged 14 and 16, person been arrested connected suspicion of possession of a corrosive substance successful a nationalist abstraction and conspiracy to perpetrate grievous bodily harm.
The teenagers were arrested astatine astir 4.20pm aft British Transport Police "spotted 2 radical acting suspiciously" astatine Surbiton railway station.
"As officers engaged with the people, they were exposed to a substance believed to beryllium alkaline," the British Transport Police said.
Two officers were taken to infirmary with injuries that are not believed to beryllium beingness changing oregon beingness threatening, constabulary said.
"Seven different officers, including 2 officers from the Metropolitan Police were checked astatine the country by paramedics," the British Transport Police added.
"The 16-year-old has been taken to infirmary arsenic a precaution. Officers are not looking for anyone other successful transportation and enquiries are ongoing.
"The presumption was closed portion the London Fire Brigade made the country safe, but has since been reopened."
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