After a brief interim regency by Juan Rodríguez Ballesteros, and according to the succession law in place at the time, the position was laid claim to and assumed by the most senior military commander, who happened to be Brigadier García Carrasco.

García Carrasco took over the post of Governor of Chile on April 22 and in August the news of the Napoleonic invasion of Spain and of the conformation of a Supreme Central Junta to govern the Empire in the absence of a legitimate king reached the country.

In the meantime, Charlotte Joaquina, sister of Ferdinand and wife of the King of Portugal, who was living in Brazil, also made attempts to obtain the administration of the Spanish dominions in Latin America.

The majority of the people were fervent royalists but were divided into two groups: those who favored the status quo and the divine right of Ferdinand VII (known as absolutists) and those who wanted to proclaim Charlotte Joaquina as Queen (known as carlotists).

A third group was composed of those who proposed the replacement of the Spanish authorities with a local junta of notable citizens, which would conform a provisional government to rule in the absence of the king and an independent Spain (known as juntistas).

In June 1810 news arrived from Buenos Aires that Napoleon Bonaparte's forces had conquered Andalusia and laid siege to Cádiz, the last redoubt against the French on Spanish soil.

García Carrasco, who was a supporter of the carlotist group, managed to magnify the political problems by taking arbitrary and harsh measures, such as the arrest and deportation to Lima without due process of well-known and socially prominent citizens under simple suspicions of having been sympathetic to the junta idea.