More than 2,000 migrants tried to enter Eurotunnel premises in the French port of Calais on Monday night in a desperate bid to reach England through the Channel tunnel, a spokesman said.
"It was the biggest incursion effort in the past month and a half," said the spokesman for Eurotunnel, which is battling often deadly efforts by migrants to smuggle themselves into Britain.
Several people were injured, a Eurotunnel spokesman told the BBC, but it was unclear how many.
The service disruption caused by the migrants' incursion was the "biggest" in the past month and a half, the spokesman added.
This summer, eight migrants have died by trying to reach the United Kingdom aboard trucks in the tunnel, the BBC reported.
An official in the northern French port of Calais, who spoke anonymously because she wasn't authorized to speak publicly, told The Associated Press that police arrested 200 of the migrants.
About 3,000 migrants are currently living in makeshift camps in Calais. The encampments have soured relations between Britain and France, which blame each other for failing to cope with the crisis.
Al Jazeera and wire services
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