BBCFrench police closed train traffic to and from Paris Gare du Nord station on Friday after an unexploded World War Two bomb was found on tracks leading to the terminal, train companies reported.
The bomb was found on the tracks during overnight works, train line RER B posted on X. Media said the discovery was made in the area of Saint-Denis, a suburb of Paris.
The Eurostar and all other trains were halted as police worked to disable the device.
Eurostar’s website shows trains from London to Paris scheduled to depart before 10:30 GMT on Friday were cancelled, and routes from Paris to London before noon local time (11:00 GMT) were also cancelled.
Eurostar said on its update that “due to an object on the tracks near Paris Gare du Nord, we are expecting disruption to our services this morning”.
Passengers could exchange their ticket for free to travel at another date or time in the same class, subject to availability, the train company said.
Eurostar services from London to Lille were running as normal. Trains to Brussels and Amsterdam from London were largely unaffected.
Queues were beginning to form by 8:30 GMT at St Pancras train station in London as passengers tried to work out their next steps.
One group was approaching the front of the line after a two-and-a-half hour wait.
Their 07:00 GMT train was cancelled and they planned to travel to Lille and make a three-hour bus journey to Paris.
Ivana Koralek told the BBC she had decided to cancel a trip to see her elderly mother and nephew in France.
She said she had been unable to rebook for three weeks’ time because ticket machines in the station did not offer the discount she had originally received.
Additional reporting by Tom Symonds
