 The Kejache claimed that their towns were fortified against the attacks of their aggressive Itza neighbours.They arrived at the north shore of Lake Petén Itzá on 13 March 1525.The Roman Catholic priests accompanying the expedition celebrated mass in the presence of Aj Kan Ekʼ, the king of the Itza, who was said to be so impressed that he pledged to worship the cross and to destroy his idols.