Erwan Blais, 18, went missing in February after a discotheque in Moncoutant-sur-Sèvre. His body was discovered Thursday in a river, most likely drowned, announced the public prosecutor's office.

The autopsy carried out on Friday at the Poitiers medico-legal institute “did not reveal any lesion suggestive of violence, seizure, constraint or defense which could raise suspicion of the violent intervention of a third party. The main hypothesis is death by drowning,” writes the publicProsecutor in Niort.