Fiber optic cables targeted in new infrastructure attack in France

France was on Monday probing the possible involvement of ultra-left movements in attacks that paralyzed the rail network at the start of the Olympic Games, as new sabotage acts affected fiber optic cables in several areas.

With the government vigilant over the risk of more such attacks during the Games, French authorities on Sunday arrested an activist from an ultra-left movement at a site belonging to national rail operator SNCF.

Police said the cables of several telecoms operators...