A man has been detained and a cordon was put in place after the vehicle was stopped during a routine security check at the terminal at around 10.30am.

The incident was resolved by 4pm.

Police have confirmed it was not linked to the ongoing search for Daniel Khalife, the fugitive who escaped prison on Wednesday.

Access to the Folkestone terminal was suspended and customers were advised that travel would be severely disrupted throughout the afternoon.

Pictures obtained by Sky News showed vehicles waiting in long queues.

Customers are advised to check the LeShuttle website and social media for the latest travel information.

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A driver at the terminal said a member of staff told him the area was on lockdown on Friday morning.

Meanwhile, police are working "night and day" to recapture Khalife, Prime Minister Rishi Sunak has said.

Prison escape latest: Details of 'odd' fugitive emerge

The 21-year-old former soldier escaped from Wandsworth prison on Wednesday morning.

Speaking from New Delhi, where he is at the G20 summit, Mr Sunak said: "I know people will be anxious about it but police are working very hard to recapture the individual concerned and the justice secretary has initiated an internal inquiry into the circumstances around his escape."