In a series of coordinated arson attacks just hours before the Paris Olympics opening ceremony, France's high-speed rail network suffered major disruptions, affecting approximately 800,000 passengers. Rail operator SNCF reported that fires were intentionally set on key lines, leading to significant damage and widespread cancellations. The French government condemned these attacks as acts of sabotage, with Transport Minister Patrice Vergriete describing them as 'outrageous criminal acts.' Speculations have arisen regarding potential Russian involvement, particularly following the arrest of a suspected Russian operative who allegedly boasted about turning the Olympics into a chaotic event. Although the exact motives remain unclear, the incidents have prompted heightened security measures across Paris. Passengers are advised to avoid travel and expect delays, as normal rail services may not resume until after the weekend.