What about paramilitary fighters?
Since 2003, some 31,000 paramilitaries handed in their weapons under a peace deal.
A controversial justice and peace law passed in 2005 meant that paramilitary fighters were eligible for reduced jail terms - of no more than eight years - if they gave details of their involvement in torture, killings and other crimes.
Critics argued that paramilitaries guilty of serious human rights violations could end up serving only token jail terms.
The government points to figures which it says show a decreasing level of violence as evidence that its strategy is working.
The extent of the paramilitaries' influence over and involvement in local, regional and national politics came to the fore in 2007.
In a scandal dubbed the "parapolitics", a dozen members of congress were jailed and dozens more politicians investigated for links to the AUC.
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