Police have arrested two men on suspicion of people trafficking after a van overturned on a motorway.
A 15-year-old was taken to hospital with injuries which are not believed to be serious.
The two men were arrested after their van, towing a caravan, crashed shortly after 5am on the northbound M11 in Essex, between junction 8 for Stansted and junction 9 for Great Chesterford.
The 42-year-old and 19-year-old, both from Poland, were also arrested on suspicion of dangerous driving.
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A third man, a 29-year-old also from Poland, was arrested on suspicion of immigration offences.
All men remain in custody being questioned by detectives.