Pascal Marconville, the prosecutor in nearby Boulogne-sur-Mer, said: ‘He stopped to try to rescue the victim but was violently attacked by several migrants and preferred to leave.’
Mr Marconville said the motorist drove to a police station at the entrance to the Channel Tunnel and gave a full statement.
He tested negative for alcohol and drugs, and his testament suggested the horrifying incident was caused by an accident.
Mr Marconville said the driver was not charged, and was free to carry on with his journey by early on Monday.
‘An Eritrean migrant was knocked over on Sunday at around 8.30pm,’ said another investigating source. ‘He was rushed to hospital in Calais but later died from his injuries at around 11pm.
‘The man’s wife, who is in her thirties, was also treated in hospital, but her condition is not life threatening.’