Fire crews have freed a woman trapped in her vehicle after a road traffic collision on the A12 northbound between Hatfield Peverel and Witham.
The woman was left in the care of the ambulance service after the incident which involved a blue Peugeot and a silver Citroen.
Three other people also sustained minor injuries.
Police and paramedics were called at about 9.50pm and the road was closed from 11pm before it was reopened shortly before 1am after being made safe by fire crews.
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