The Colombian government claimed that 10 soldiers were killed in an attack by suspected Farc militants, despite a ceasefire being in place between the warring sides.
The attack, in the Farc controlled town of Cauca, also injured 17 soldiers according to government reports, who claimed grenades and explosives were used in the attack.
General Mario Valencia said the army "reproaches this act, whose authors were the narco-terrorists of the fourth commission of the Miller Perdomo mobile column of the FARC."
Colombian President Juan Manuel Santos also stated he will travel to the area today.