PARAMEDICS and police officers swarmed a barn in a farmer's field after a 'serious medical emergency'.
*UPDATE*: A woman has now died - read the latest here.
They also spotted three land ambulances, a police van, two unmarked police cars and one normal squad car on the scene.
Now South Central Ambulance service has revealed that it was a 'medical emergency'.
A spokesperson said that police arrived because it happened in a 'public place'.
Earlier photographs and videos from the scene showed the air ambulance landing in the field, which is just north of the A417 in East Henred, behind a housing development.
No other details were revealed.
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