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- The M1 was closed northbound between J1 A406 North Circular (Staples Corner) to J5 A41 Colne Way (Watford) for more than two hours this afternoon.
- Hertfordshire Constabulary said the lanes were closed following concern for the welfare of a man. The London Ambulance Service was called.
- The motorway has now reopened.
- The police continue to investigate what happened.
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