In 1800, Masséna was besieged at Genoa in Italy by the Austrians, while Bonaparte marched with the Army of the Reserve to Milan. By the end of May, plague had spread throughout Genoa and the civilian population was in revolt. Negotiations were begun for the exchange of prisoners early in June, but the citizens and some of the garrison clamored for capitulation. Unknown to Masséna, the Austrian general Peter Ott had been ordered to raise the siege because Bonaparte had crossed Great St Bernard Pass and was now threatening the main Austrian army. Describing the situation at Genoa, Ott requested and received permission to continue the siege. On 4 June, with one day's rations remaining, Masséna's negotiator finally agreed to evacuate the French Army from Genoa. However, "if the word capitulation was mentioned or written," Masséna threatened to end all negotiations. Two days later, a few of the French left the city by sea, but the bulk of Masséna's starving and exhausted troops marched out of the city with all their equipment and followed the road along the coast toward France, ending the siege of almost 60 days. The siege was an astonishing demonstration of tenacity, ingenuity, courage, and daring that garnered additional laurels for Masséna and placed him in a category previously reserved for Bonaparte alone.