The arrests in Antioquia and Cesar related to the murders by the army of 18 innocent campesinos who were presented as guerrillas killed in combat.
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Over 3,000 people were killed this way between 2002 to 2008, in an attempt to portray the war against the Revolutionary Armed Forces of Colombia rebel group as more successful.
A report published in June showed that these killings happened while U.S. troops were deployed in Colombia, working with the Colombian army. Furthermore, top generals Jaime Lasprilla and Juan Pablo Rodriguez, were also implicated in the scandal.
The investigation continues.
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