France’s national rail operator, SNCF, has completed repairs on infrastructure damaged in a suspected arson attack on Friday.

Most trains were running as scheduled by Sunday, with full service expected to resume by Monday.

The attack, described by officials as “sabotage” aimed at paralyzing high-speed TGV lines to and from Paris, caused significant disruption ahead of the Olympic Games’ opening ceremony.

SNCF staff repaired damaged fibre optic cables on several lines, and thwarted an attempt to destroy safety equipment on another.

The disruption affected around 250,000 passengers on Friday, with estimates of up to 800,000 impacted over three days.

Eurostar services were also affected, with one in four trains canceled over the weekend. Prime Minister Sir Keir Starmer was among those affected, opting to fly to the Games instead, the BBC has reported.

The Paris prosecutor’s office has launched a criminal investigation, overseen by its organized crime office.

Written by B.C. Begley