A woman in her 40s has died and nine other people have been injured after two cars crashed on the M4 motorway.
A seven-seater Toyota Corolla and a Volkswagen Tiguan collided between junctions 16 and 17 on the motorway at around 11.30pm on Sunday, while there were reports that a third vehicle may have been involved, Wiltshire Police said.
The woman, one of seven people travelling in the Toyota, died at the scene. Her next of kin have been informed.
A second woman, in her 50s, suffered serious injuries which are not thought to be life-threatening, the force said.
The other five occupants of the car were treated for minor injuries.
The #M4 west between J16 #Swindon & J17 #Chippenham remains closed for @wiltshirepolice collision investigations.
— National Highways: South-West (@HighwaysSWEST) June 23, 2025
Closure is likely to remain into the afternoon and possibly into the evening rush hour.
Diversion can be found via the attached link: https://t.co/ervOv0caZX pic.twitter.com/yPPSgiFyaV
The occupants of the Volkswagen car were taken to hospital as a precaution.
An investigation into what happened is currently taking place at the scene.
Police said they had received reports that a white vehicle may have been involved in the incident and subsequently left the scene.
National Highways said the motorway could remain closed westbound until Monday evening.
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