- Eurostar say services will run as normal on Wednesday although two trains have been cancelled
- Passengers on trains sent back to Paris and London will be put on trains on Wednesday
- The passengers stranded in Calais will be taken to London on a "rescue train" that will leave at 9.30
Six Eurostar trains were blocked on both sides of the Channel Tunnel ovenight on Tuesday leaving hundreds of passengers stranded.
By 5:00 am French time (0300 GMT), passengers on the 9055 train from Paris to London were still waiting at the Calais-Frethun station in northern France after "intruders" on the tracks blocked trains from entering the Channel Tunnel, a Eurostar official said.
Water and food have been distributed to passengers and "rescue services are also present for those who need help, particularly the elderly," added the official, describing the situation as "complicated".
The Local's Oliver Gee was on one of the blocked Eurostar trains, that was travelling from London to Paris.
"Our conductor gave very little information, other than to say 'there were people on the tracks'. As the hours passed people were becoming irritated, until the conductor finally announced we were going back to London.
"Back at St Pancras it was an absolute mess. There was one member of staff surrounded by 100 people yelling at her in French and English. One man had to be held back by others because he was so angry."
The trespassers are still being removed from the tunnel and away from the tracks. We will let you know as soon as we have more info.— Eurostar (@Eurostar) September 1, 2015
A passenger aboard the train, Geraldine Guyon, said the situation remained tense in the station, which lies close to the port of Calais where some 3,000 migrants living in makeshift camps have been ramping up their attempts to cross the tunnel to Britain.
"There must be about 1,000 people on the platforms which are full to overflowing. There is no communication, soldiers are present," said Guyon from the train of 18 cars, which could be carrying a maximum of 750 people under Eurostar rules.
Clothilde, 23-year-old French woman who lives in London, said she had seen the police hurrying down the train and believed there were migrants on the roof.
"We have not see the migrants, but we knew that they were everywhere on the roof and that's why we waited for a helicopter to ensure there were no migrants above us," she said, adding: "Passengers are not allowed to leave the station, except to take a taxi at the entrance."
'Security forces have intervened'
A spokesman for French rail company SNCF said people on the tracks on the French side of the tunnel had forced a train to slow down.
"Once the train stopped, law enforcement intervened... and that blocked Eurostar services that were travelling towards London and the power had to be cut for safety reasons," he said.
Our sincere apologies to all those affected by the disruptions and for the difficult conditions encountered.— Eurostar (@Eurostar) September 2, 2015
A Eurostar official said the company hoped to transport passengers to London, the train's original destination, in the coming hours. Five other trains originally disrupted by the incident have either been sent back to where they departed from or on to their final destination.
"We are doing everything possible to ensure passengers are welcomed with a drink, food, taxis and hotels when they arrive," a Eurostar spokesman said.
France and Britain have brought in emergency measures to deal with a surge in the number of migrants trying cross the Channel Tunnel after people died while making a desperate attempt to reach England.
London has announced an extra seven million pounds (9.8 million euros) to help France secure the Eurotunnel site on its side of the Channel, in addition to 4.7 million euros already spent on erecting barriers aimed at securing access to the terminal and the platforms.
But Europe is struggling to cope with a surge in new arrivals fleeing war and poverty in the Middle East and Africa, and Eurostar services have been repeatedly hit as thousands of them have attempted to reach what they see as
the "El Dorado" of Britain.
Services on the Channel Tunnel were also disrupted by striking French sailors, who blocked Calais for several days in July.