Several people were injured and one was taken to hospital after a crash on the M25 this morning.
It happened at around 8:20am near junction 17 for Maple Cross clockwise.
Herts Police said two cars were involved - a Ford Kuga and a Toyota Aventis - with three people suffering slight injuries. One was taken to hospital with a face injury.
Officers are currently investigating whether a third car was involved, a spokesperson for the force said.
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The East of England Ambulance Service and National Highways were also called to the scene.
According to National Highways, there were delays of around 50 minutes, with two lanes closed, but it has since confirmed all four lanes have reopened.
The lanes were shut between junction 17 for Rickmansworth and junction 18 for Chorleywood.
East of England Ambulance Service have announced that a child and a man were both taken to Watford General Hospital for further assessment and care.
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