In the meantime, John VIII, menaced by the Saracens, was urging Charles to come to his defence in Italy. Charles again crossed the Alps, but this expedition was received with little enthusiasm by the nobles, and even by his regent in Lombardy, Boso, and they refused to join his army. At the same time Carloman, son of Louis the German, entered northern Italy. Charles, ill and in great distress, started on his way back to Gaul, but died while crossing the pass of Mont Cenis at Brides-les-Bains, on 6 October 877.