In 2010, documents uncovered by the Paraguayan authorities revealed links between the EPP and the since-disbanded Revolutionary Armed Forces of Colombia.
The Paraguayan government recently sought support from Colombia in intelligence and military training to combat the EPP.
In an unforeseen way, this could mean the beginning of the end for the guerrilla group.
"The Concepcion region has become a strategic place for drug traffickers, and the EPP disturbs them, because it attracts the presence of the state," said Martens.