pThis block started in 1993 with 100 paramilitaries under the command of Guillermo Cristanchonbsp;Acosta, alias ldquo;Camilo Morantesrdquo;. They committed exactions in Magdalena Medio in the region of Santander and assassinated peasants whom they suspected of collaboration with the guerilla. In 1998 the paramilitary group called ldquo;Juancho Pradardquo; merged with the Autodefensas de Sentander. In the same year the Ausac entered Barrancabermeja and killed social leaders, but since the group remained outside of the Auc, Carlos Castantilde;o ordered the murder of ldquo;Camilo Morantesrdquo; and the dissolution of the Ausac in 1999. This structure became part of the Bloque Central Bolivar./p