In April of that year Díaz Vélez was sent in a third attack to Santa Fe. But, looking to avoid a civil war, and in order that the people of Santa Fe, Entre Ríos, Corrientes and the Banda Oriental send deputies to the Congress of Tucumán he signed -the day 9- with the commander of the naval forces of Santa Fe the Santo Tomé pact, by which the Army of Observation deposed interim director Ignacio Álvarez Thomas, transferred its headquarters to Díaz Vélez, replacing Belgrano and agreed that a final peace should be ratified by both governments and also be accepted by Artigas. Artigas's refusal to sign a final peace agreement led to the non-participation of representatives santafesinos in the Argentine Declaration of Independence in the Congress of Tucumán.