GETTY Authorities warn migrants have made their way back into Calais

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Gangs have been spotted loitering close to the port and lorry parks. Evidence of their arrival in Calais, just three months after the notorious Jungle camp was closed, has sparked fears of a new border crisis. The Daily Express has witnessed activity in the town and at a stop used by dozens of UK hauliers in neighbouring Marck.

Officials on both sides of the Channel are concerned the arrivals could trigger a resurgence in human trafficking gangs and a return to the chaos seen in northern France during the summer.

We warned that if levels of security were not maintained it would be inevitable there would be a resurgence in migrant activity Richard Burnett, Road Haulage Association

Road Haulage Association chief executive Richard Burnett said: “We warned that if levels of security were not maintained it would be inevitable there would be a resurgence in migrant activity. “That inevitability has now become a reality and the risk to UK-bound hauliers is increasing on a daily basis. “We stand by our demands that the French military be deployed to protect drivers and the people of Calais.”

RHA Richard Burnett warned that the problem might rise again

GETTY Officials are worried this could see a resurgence in human trafficking

The Jungle was dismantled and 10,000 migrants dispersed in October. At the same time Britain stumped up £36million to maintain security in the area. There are now thought to be at least six informal migrant camps in the region and an official camp at Grande-Synthe, near Dunkirk.

Calais Jungle Camp: Before and After Fri, November 11, 2016 Extraordinary photographs show life in the last days of the Calais 'Jungle' refugee camp at the end of October, alongside the current scene as it stands today. Play slideshow 1 of 24

GETTY Some 10,000 migrants were dispersed in October when the camp was raised to the ground

The National Crime Agency says people smugglers charge as little as £112 at this time of year but a “guaranteed” transit costs £6,900. Today, Ukip MEP Mike Hookem said: “Traffickers have been making a very lucrative living. “Unless the French government gives the police the manpower and authority to act the problem will escalate.

GETTY Without proper security measures, things could escalate once again