Interior Minister Manuel Valls said the death toll from Friday's accident is "evolving constantly at this point and unfortunately it will probably rise." He said several dozen passengers were hurt, some seriously.
The French newspaper Le Parisien had reported eight fatalities and said many of the wounded are still stuck on the train.
Jean-Paul Boulet, spokesman for SNCF, the country's state-owned railway company, said the train was carrying some 350 passengers when it derailed at 5:15 p.m. local time.
After leaving the tracks, the train crashed into the station at Bretigny-sur-Orge, about 20 kilometres south of Paris.
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