"There has been... a landslip on the RER B" between the southwestern suburbs of St-Remy-les-Chevreuse and Orsay, the minister, Elisabeth Borne, told Franceinfo radio.
It caused "three carriages to overturn. Fortunately, there are only seven slightly injured, who are being treated."
A spokesman for Paris transport operator RATP said the heavy rains caused the collapse of an embankment just before 5:00 am (local time), which led the carriages to derail and tip over.
Authorities in the Essonne department where the accident took place confirmed seven people had been slightly injured.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)