The operator of the rail tunnel linking Britain and France says services were disrupted early on Saturday after around 150 migrants tried to storm a French terminal in an attempt to board a Britain-bound freight.
Eurotunnel says freight services were disrupted for a few hours after migrants tried to enter restricted areas port of Calais at about 2 a.m. local time. Some passenger services were also affected.
The company on Saturday urged authorities to resolve the worsening migrant crisis in the region.
The disruption caused a return of snaking lines of trucks and freighters to British highways, which saw thousands of drivers stuck this week because striking French workers crippled ferry crossings.
Businesses have complained of migrants taking advantage of the slow-moving traffic to board vehicles.