Earlier reports suggested that Quennedey, who was working as a senior administrator in the Senate, was detained on suspicions of an attempt to pass top secret information to North Korea.
Quennedey was placed under judicial control at the request of the prosecutors, according to France Info radio station. He was also issued a foreign travel ban.
READ MORE: French Senate Civil Servant Detained Over Suspicions of DPRK Spying — Reports
The civil servant was suspended from work on Tuesday.