Article R3131-20 of the French Public Health Code
I. – The person placed in quarantine or solitary confinement pursuant to II of article L. 3131-17, as well as the public prosecutor, may at any time apply to the liberty and custody judge for the release of the quarantine or solitary confinement measure. The matter is referred to the judge by petition sent to the clerk’s office by any means. On pain of inadmissibility, the request shall be reasoned…