Spanish train driver Francisco Jose Garzon has been discharged from hospital and taken into custody, said interior minister Jorge Fernandez Diaz.
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Those embarking across the Channel should prepare for disruption due to the problems at Calais terminals and the impact of Operation Stack.
Pensioner's photo evidence being used in the hunt for two men captured on a stolen bike in an incident that saw him suffer a heart attack.
Footage filmed at an industrial estate in Stourbridge has emerged showing suspected migrants from Calais fleeing a lorry.