 The Bishopric of Constance became another source of conflict in 1070 after the local clerics appealed to the Holy See to prevent the installation of Henry's candidate, Charles of Magdeburg, to the episcopal see.Henry denied Charles had bribed him, but he publicly admitted at a synod that his advisors may have received money from Charles.Pope Alexander II decided to investigate and summoned all German bishops who had been accused of simony or corruption to Rome, but he died in two months.