He was arrested on 20 May by the municipality of Noyant-sous-le-Lude, and sent from there to Baugé, to be transferred to a prison in Angers, from which the Committee of Public Safety was informed of his presence. His brother, abbot of Trémoille, managed to organize a conspiracy in the National Convention. Chambon, a member of The Mountain, was designated to interrogate the prince and under a pretext of bringing him to Paris, he handed him to the Vendéens. Thus he managed to escape thanks to this plan well-conceived by his own brother from the inside of the National Convention.