The Southern Bloc of the Revolutionary Armed Forces of Colombia was the first bloc to exist and is where the roots of the guerrilla movement lie. The bloc has been held responsible for several notorious attacks, including the infamous "donkey-bomb", numerous attacks against military bases, as well as Íngrid Betancourt´s kidnapping. It was also blamed by government investigators and prosecutors for the bombing of the El Nogal club. FARC itself denied that any of its members were responsible for the attack.