When Bruno announced his plan to leave Venice to his host, the latter, who was unhappy with the teachings he had received and had apparently come to dislike Bruno, denounced him to the Venetian Inquisition, which had Bruno arrested on 22 May 1592.
När Bruno kungjorde sin plan att lämna Venedig för sin värd anmälde denne, som var otillfredsställd med den undervisning han fått och som uppenbarligen utvecklat en personlig motvilja, Bruno för den venetianska inkvisitionen som arresterade honom den 22 maj 1592.