Everything was in place.

Streets in the centre of Paris have been blocked off, metro stations closed and thousands of police, soldiers and other guards deployed to maintain security on the big showpiece day to kick off the Olympics.

But the saboteurs struck away from the capital, at five unguarded places.

France’s state-owned rail company SNCF says the saboteurs either vandalised or tried to vandalise five signal boxes and electricity installations between 01:00 and 05:30 on Friday.

One site was at Courtalain, east of Le Mans and 150km south-west of Paris. The local community’s social media page posted a picture of burnt-out cables in a shallow gulley, with its protective SNCF paving stones discarded.

SNCF spoke of a “massive, large-scale attack aimed at paralysing” its services, involving arson and theft targeting cabling, not just at Courtalain but at Pagny-sur-Moselle, a village outside the eastern city of Metz and Croisilles, not far from the northern city of Arras.

Small sites, but at big junctions on the high-speed TGV network.

Another attempted attack, on another TGV junction to the southeast of Paris at Vergigny, was foiled by SNCF workers who just happened to be carrying out maintenance on-site in the early hours of Friday.

The sabotage was coordinated and the effects were immediate, on one of the busiest days imaginable for France’s highly regarded rail system.

The head of SNCF, Jean-Pierre Farandou, has spoken of a “premeditated, calculated, coordinated” attack that demanded considerable repair work.

Friday, July 26, 2024,  marks the start of the grand départ or big getaway for many French holidaymakers heading out of the cities. It is also the day of the showpiece opening ceremony that the Paris Olympics organisers have worked on for years.

Hundreds of stranded passengers filled the main concourses at Gare Du Nord and Gare Montparnasse, two of the big rail hubs in Paris for travellers on the big lines to the north and west of the capital.

Passengers at Gare du Nord waited patiently for news about delayed trains, not just within France but to London, Brussels and Amsterdam.

The much-vaunted high-speed TGV network heading in and out of Paris – north to Lille, west to Le Mans and east towards Strasbourg – was down.

At the nearby Gare de L’Est, which serves the east, an SNCF official said they were planning to put the high-speed TGV trains onto other, slower lines, which would mean long delays and disruptions but would keep the network moving.

“Everything points us to these fires being deliberate,” said Transport Minister Patrice Vergriete. “The timing [of the attacks], the vans that have been recovered after people have fled, the incendiary agents found on the scene.”

Acts of sabotage, and timed to cause severe disruption on the day that Paris is trying to show its best face to the world.

Caretaker Prime Minister Gabriel Attal said the repercussions for the rail network were massive and serious, and France’s intelligence services and forces of order had been deployed to “find and punish those behind these criminal acts”.

But who would want to ruin the plans of hundreds of thousands of French travellers and disrupt the start of the Olympic Games?

Only this week a Russian man was arrested on suspicion of involvement in a “destabilisation” plot targeting the Games.

Interior Minister Gérald Darmanin said he was suspected of aiming to “organise operations of destabilisation, interference, spying” on behalf of Russia’s FSB intelligence service.

So far no Russian link has been made by French authorities to the sabotage on the rail networks.

One security source suggested in French media that the arson attack bore all the hallmarks of the extreme left.

During the spring, French authorities suggested that several groups had tried to disrupt Olympic events, including the torch relay that has been going on across France in the run-up to the opening ceremony.

Mr Darmanin said earlier this month that 3,570 people had been barred from the Games, including people seen as security risks as well as “dozens of radical individuals close to Islamist, ultra-left and ultra-right circles”.

Almost a million people, ranging from athletes and coaches to Olympic volunteers, have passed a security check before the Games in Paris.

But preventing acts of sabotage at unguarded sites in rural areas is a wholly different prospect.

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