EMERGENCY services are currently dealing with a crash scene on the A4 at Corsham, with reports suggesting multiple casualties.
The two-vehicle collision involving an Audi and a Smart car happened shortly before 2.30pm at the Cross Keys junction.
The most serious injuries have been sustained by a woman in her 20s, who suffered neck and head trauma.
The road remains blocked and drivers should seek alternative routes.
A Wiltshire Police spokesperson confirmed: “We received a call at 2.30pm to a two-vehicle road traffic collision near the Cross Keys, Corsham.
“The road is blocked.
“The ambulance service was called to the scene to deal with multiple injuries.
“The vehicles involved were a Audi A1 and a Smart car.
“A woman in her 20s is believed to have sustained neck and head injuries.”