Two people died and another two were seriously injured in a crash in Rowde near Devizes.
Wiltshire Police said the incident, involving one vehicle, happened on the A342 near to the entrance of Rowdeford School.
Two people were pronounced dead at the scene of the collision, which happened just before 0130 GMT.
One of the passengers has been taken to the Great Western Hospital in Swindon with life-threatening injuries.
Another passenger is in a serious condition at Frenchay Hospital in Bristol.
Police said the A342 at Rowde is likely to remain closed until the mid-morning.
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