It was the cleaners who made the grim discovery.
In mid-September, in the toilets of an Ouigo at Saint-Charles station in Marseille (Bouches-du-Rhône), they found the lifeless body of an infant, naked.
The newborn, a little boy, was "hidden in a toilet bin", wrapped in paper, the Marseille prosecutor's office said in a statement.
More than a month later, a 40-year-old woman was arrested on Wednesday in Brebières (Pas-de-Calais) and indicted on Friday for "voluntary homicide of a 15-year-old minor", reveals France Bleu Nord.
The forty-year-old is suspected of having given the death to her child whom she had just given birth.
His companion was heard by investigators to whom he allegedly said he was not aware of his companion's pregnancy, reports France Bleu.
The prosecution had indicated that "the autopsy of the body of the child revealed that the latter had breathed and was therefore born alive and viable".
The investigation is in the hands of the police officers of the Departmental Security of Marseille.