Police made the discovery in the town of Orange after the woman gave birth to a healthy baby on Monday, sources close to the investigation said, without providing details.
In March, a French court jailed a 44-year-old woman for 25 years over the deaths of two of her newborn babies, who police found in the family freezer.
In 2018, a court sentenced a woman with a depressive and sometimes violent husband to eight years in prison for drowning five of her newborn babies and freezing their bodies.
In 2015, another court jailed a mother for nine years for killing eight of her newborns, with the jury finding she had impaired judgement.
