The girl was reportedly stabbed in Rennes, France, by an attacker marking the Islamic month of fasting.
Prosecutor Nicolas Jacquet confirmed the attack today, in which the 19-year-old victim sustained three stab wounds.
He said the man, who had known psychiatric problems, claimed he heard voices demanding a sacrifice for Ramadan.
“Voices told him that he must commit a sacrifice on the occasion of Ramadan,” the prosecutor said.
The knifeman was arrested, examined by a doctor and immediately sent for psychiatric treatment.
Mr Jacquet added that the 32-year-old had “already made several stays in psychiatric hospitals”.
Le Dauphine writes that the man told a witness to whom he handed the knife that he was a Muslim.