Gustavo Munoz, director of the Nueva Espernaza Foundation, said that the Revolutionary Armed Forces of Colombia (FARC) kidnapped the 10 people and killed them.
Munoz said that some former FARC members, who support his organization, gave information on the location of the corpses in a way to compensate the victims.
These former FARC members contacted Munoz during the demobilization negotiation and located the place where they buried the 10 hostages, he said.
"We arrived there with the prosecutor and the Army, we exhumed the corpses, then we contacted the (dead's) families for DNA sampling," Munoz said.
FARC is the largest anti-government organization in Colombia.
Published by Mike Hitchen i On Global Trends, world news, analysis, opinion
Putting principles before profits
Putting principles before profits