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Delays have now cleared after an earlier pile-up on the M20.
The crash, reportedly involving three vehicles, happened on the coast-bound carriageway between junction 8 for Leeds Castle and 9 for Ashford.
Emergency services were called at 6.50am.
Two lanes of three were closed, and traffic built up, while police, ambulance crews and highways officers dealt with the incident.
The carriageway reopened at about 8am, and delays have since cleared.