A three-year-old boy has died following a "medical episode" at a large family festival.
Officers from Hampshire and Isle of Wight Constabulary were called to the scene at Carfest, at Laverstoke Park Farm, in Overton, Hampshire, shortly after 23:00 BST on Saturday.
The child died a short time after having been taken by road to hospital.
Police said the death was being treated as unexpected, with a file being prepared for the coroner.
Hampshire and Isle of Wight Air Ambulance said its helicopter had been dispatched to the incident.
It added that following treatment from a doctor and specialist paramedic, the child was taken to hospital by a team from South Central Ambulance Service.
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