Unfortunately for him, General Bonaparte, then head of the Armée d'Italie, intercepted a royalist agent, Louis-Alexandre de Launay, comte d'Antraigues, in possession of documents revealing the conspiracy and the treason of Pichegru. He sent General Pierre Augereau and his army to Paris, where the general advertised the treason with posters in the streets. The principal conspirators were either arrested and deported to Guyana (like Pichegru and Barthélémy), or forced to flee (like Carnot and Vaublanc). The latter managed to escape the city limits of Paris, which was then still in a state of siege, by hiding in a carriage. This escape was achieved through the connivance of Rochambeau. Vaublanc made it to Italy with the help of various disguises; on his way he passed through Switzerland, where he stayed with his friend Pastoret.