Medics from Wiltshire Air Ambulance are attending a crash in Trowbridge.
The road traffic collision happened on the Leap Gate Roundabout (A361) at around 11am.
The road is closed in all directions while 999 crews attend to a casualty, who is being given CPR.
Two ambulances, an air ambulance rapid response car and four police vehicles are at the incident.
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If anyone has information or photos relating to this incident, text or WhatsApp 07794 802 940 or email newsdesk@wiltshire999s.co.uk. To pass information to police, call 101.
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