The French rail company SNCF said Sunday that gun shots broke a catenary, or overhead wire, on the line of a high-speed TGV train in the Paris region, severely disrupting traffic for 50 trains.
   
The SNCF "has filed a complaint after gun shots most certainly led to the breaking of a catenary" Saturday evening near Marcoussis in the Essonne department of the Paris suburbs, the company said in a statement.
   
No further deatails of the incident were given.
   
The incident late Saturday brought traffic on the high-speed line which serves the Atlantic coastal area to a halt in both directions.
   
Rail service resumed on Sunday morning, after passengers faced delays of up to six hours.
   
France's secretary of state for transport, Dominique Bussereau, said that "the disruptions which severely affected passengers are unacceptable," according to her spokeswoman.
   
"Dominique Bussereau has called on the head of SNCF to decide without further delay what measures he plans to take in the short and medium term," the spokesowoman added in a statement to AFP.
   
Last month SNCF estimated that it needed to invest 400 million euros (508 million dollars) over four years to renovate the catenaries on its rail network as some are very worn out, according to an audit conducted in September.