On 1 January 1809, Martín de Álzaga rallied most peninsular battalions to Plaza de Mayo and attempted a mutiny against Liniers. A few criollos, such as Mariano Moreno, laid their hopes for independence in this attempt, but most did not. The battalions still faithful to Liniers – the Regiment of Patricians, the other criollo battalions, and the remaining peninsular ones – conquered the Plaza and ordered the mutinying forces to withdraw. Castelli supported Liniers, accusing Álzaga of independentism. Though Castelli was himself an independentist, and had also sought to remove Liniers, he opposed Álzaga for other reasons: Álzaga was hoping to maintaining the social dominance of the peninsulares over the criollos once the viceroy, who opposed his interests, was deposed. Álzaga was defeated, and the power of the criollos was increased: Sentenach and Álzaga were banished to Carmen de Patagones and the Spanish militias who attempted the coup were disbanded.