Members of the Search Bloc as well as Colombian and United States intelligence agencies either colluded with "Los Pepes" or moonlighted as both the Search Bloc and "Los Pepes" simultaneously in their efforts to find Escobar. This coordination was allegedly conducted mainly through the sharing of intelligence to allow "Los Pepes" to bring down Escobar and his few remaining allies, but there are reports that some individual Search Bloc members directly participated in missions of "Los Pepes" death squads. One of the leaders of "Los Pepes" was Diego Murillo Bejarano (also known as "Don Berna"), a former Medellín Cartel associate who became a rival drug kingpin and eventually emerged as a leader of one of the most powerful factions within the Self-Defence of Colombia.