 René Hérault also established a large network of spies and informants in Paris and in the French provinces, and like many other Lieutenant Generals of Police of Paris in the 18th century, he was particularly disliked for his secret police.On 30 December 1739, René Hérault left the Lieutenancy General of Police, where he was replaced by his son-in-law Claude-Henri Feydeau de Marville, and he was appointed "intendant" of the "généralité" of Paris and "conseiller d'État".He died in office on 2 August 1740 in Paris, at the age of 49.