Police are assisting ambulance crews dealing with a “chemical incident” at HMP Lewes with 10 to 15 people affected, according to reports.

An incident support van with the letters “CBRN” – which stands for chemical, biological, radiological and nuclear – was spotted outside the prison on Thursday afternoon, The Argus reported.

A spokesperson for Sussex Poiice said: “Sussex Police are assisting the ambulance service following the report of a medical incident at HMP Lewes at around 12.30pm on Thursday (28 March). “

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