time, several of Cortés' soldiers attempted to mutiny. When Cortés discovered the plot, he had his ships scuttled and sank them in the harbor to remove any possibility of escaping to Cuba. The Spanish-led Totonac army crossed into Tlaxcala to seek the latter's alliance against the Aztecs. However, the Tlaxcalan general Xicotencatl the Younger believed them to be hostile and attacked. After fighting several close battles, Cortés eventually convinced the leaders of Tlaxcala to order their general to stand down. Cortés then secured an alliance with the people of Tlaxcala and traveled from there to the Basin of Mexico with a smaller company of 5,000-6,000 Tlaxcalans and 400 Totonacs in addition to the Spanish soldiers. During his stay in the city of Cholula, Cortés claims he received word of a planned ambush against the Spanish. In a pre-emptive response, Cortés directed his troops to attack and kill a large amount of unarmed Cholulans gathered in the main square of the city. Following the massacre at Cholula, Cortés and the other Spaniards entered Tenochtitlan, where they were greeted as guests and given quarters in the palace of former emperor Axayacatl. After staying in the city for six weeks, two Spaniards from the group left behind in Veracruz were killed in an altercation with an Aztec lord named Quetzalpopoca. Cortés claims that he used this incident as an excuse to take Motecuzoma prisoner under threat of force. Motecuzoma continued to run the kingdom as a prisoner of Cortés for several months. A second, larger Spanish expedition then arrived in 1520 under the command of Pánfilo de Narváez sent by Diego Velásquez with the goal of arresting Cortés for treason. Before confronting Narváez, Cortés secretly persuaded Narváez's lieutenants to betray him and join Cortés. Cortés was away from Tenochtitlan dealing with Narváez, while his second-in-command Pedro de Alvarado massacred a group of Aztec nobility, in response to a ritual of human sacrifice honoring Huitzilopochtli. The Aztecs retaliated by attacking the palace where the Spanish were quartered. Cortés returned to Tenochtitlan and fought his way to the palace. He then took Motecuzoma up to the roof of the palace to ask his subjects to stand down. However, by this point, the ruling council of Tenochtitlan had voted to depose Motecuzoma and had elected his brother Cuitlahuac as the new emperor. One of the Aztec soldiers struck Motecuzoma in the head with a sling stone,