Frimont sent Bubna and the Piedmontese army west through the Mount Cenis Pass confront Suchet. Meanwhile, he and Radivojevich moved north through the Simplon Pass into Switzerland with the purpose of reaching Geneva and turning the French northern flank. Intent on seizing the mountain passes, Suchet moved into Savoy on 14 June 1815. After capturing or chasing away the 3,000 Piedmontese defenders, the French began to encounter Austrian troops. Soon Austrian numerical superiority made itself felt. Both Radivojevich and Bubna were pressing back the French when news of Napoleon's abdication arrived to end the fighting. After negotiating an armistice, Suchet's forces withdrew from Savoy. But the Austrians kept advancing, taking both Grenoble and Lyon before the war officially ended.