A light aircraft and a helicopter have reportedly crashed in the skies over Buckinghamshire.
The Air Accidents Investigation Branch says it has sent out a team of people to investigate "a mid-air collision involving an aircraft and a helicopter near Aylesbury, Buckinghamshire."
Calls were made to the emergency services about the incident just after midday today (November 17).
Police, ambulance and fire services are currently working at the scene, which is near Waddesdon Manor, and a cordon has been put in place.
Thames Valley Police have also announced that there is likely to be disruption in the area throughout the day.
A spokesperson for Waddesdon Manor has said the crash took place near the village of Upper Winchendon, not on the grounds of the manor.
They added that staff from the manor rushed to the scene and also helped to direct traffic around the area so the emergency services could get through, The Guardian reported.