The People's Revolutionary Army ( ERP) was a small marxist guerrilla organization in Colombia. The group originated in the municipality of Venadillo, Tolima Department in c. 1985 as a splinter group of the National Liberation Army and was commanded by its founder Édgar Castellanos, aka "Gonzalo" until his death in January 2007. The group became a military objective of the larger guerrilla Revolutionary Armed Forces of Colombia whom declared the group as an enemy and was persecuted by paramilitary. The Colombian government wanted the group for rebellion, kidnappings and extortion crimes.