Early reporting said the raids were connected to vehicle emissions, but French police did not confirm those reports.
Last month, Renault said said it would invest€50m (£38m) into bringing the real emissions of its cars into line with those measured in official test conditions.
Renault said it is fully co-operating with inquiries, adding that it does not use emissions-cheating devices.
The police raided Renault Offices over an Emissions cheating device allegation.
This caused a sales fall of 20% after raid.
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