After shooting Liniers, Castelli returned briefly to Buenos Aires and met Moreno. The secretary of war congratulated him for his conduct, and appointed him as a member representing the Junta, with full power to direct the operations to La Paz. He also left a series of instructions: Castelli was to put the government in the hands of patriots, earn the native's support, and shoot president Nieto, governor Sanz, and the Bishop of La Paz, in the case of their capture. He received similar orders to capture and execute José Manuel de Goyeneche, who had already defeated the rebels of La Paz revolution (a rebellion similar to the May Revolution, which took place at La Paz, modern Bolivia). Castelli was also instructed to rescue and draft to the Auxiliary Army the Arribeños and Patricians soldiers that, under the command of Vicente Nieto, had left Buenos Aires in 1809 to suppress revolutions in Chuquisaca and La Paz. Suspicious of those soldiers, Nieto had them disarmed and sent as prisoners to the mines of Potosi, under the supervision of Francisco de Paula Sanz. More than a third of the soldiers died within a month of work in the mines.