KEY POINTS:
A judge slapped terrorism charges on seven people suspected of sabotaging France's rail network, including the 34-year-old alleged ringleader of the self-styled anarchist "invisible cell".
If found guilty of heading a terrorist organisation, Julien Coupat, a former sociology student, faces up to 20 years in jail. He was also warned by magistrate Thierry Fragnoli that he faced charges connected with membership of a terrorist organisation and a refusal to submit to a DNA test.
More than 160 train services were delayed after a gang jammed steel rods across overhead power cables on three high-speed lines between Paris and London, and Brussels and the French regions.
Investigaters described Coupat as a brilliant student from a well-off background. His father was a doctor, his mother a senior executive and he had been to a top business school.
