Luis Carlos Galán suggested that Galán's assassination was executed with help of corrupt Colombian policemen and some of his own bodyguards, who had been bought off by the drug cartels, including Pablo Escobar and other drug lords. Most of the arrested presumed hitmen were killed in jail or shortly after their release, allegedly to silence them. On 13 May 2005, a former Justice minister (1974) and congressman of the Colombian Liberal Party, Alberto Santofimio, known for his open connections to Pablo Escobar during the 1980s (Escobar joined Santofimio's political movement), was arrested and accused of being the intellectual author of Galán's murder. According
Pablo Escobar joined the manhunt for Escobar. They trained and advised a special Colombian police task force known as the Search Bloc, which had been created to locate Escobar. Later, as the conflict between Escobar and the governments of the United States and Colombia dragged on, and as the numbers of Escobar's enemies grew, a vigilante group known as "Los Pepes" (Los Perseguidos por Pablo Escobar, "People Persecuted by Pablo Escobar") was formed. The group was financed by his rivals and former associates, including the Cali Cartel and right-wing paramilitaries led by Carlos Castaño, who would later fund the Peasant Self-Defense Forces