BOGOTA — Colombia’s military said Monday that it killed at least 20 Revolutionary Armed Forces insurgents in a weekend air raid on a cluster of guerrilla camps in its most deadly attack on the country’s main leftist rebel group since March.
President Juan Manuel Santos has refused to honor a unilateral cease-fire declared by the rebels, known by their Spanish initials FARC, when they began formal peace talks with the government in Havana on Nov. 19.
Six bodies were recovered after Sunday’s predawn bombardment of the camps in the country’s southwestern state of Narino near the Ecuadoran border, said General Leonardo Barrera, head of the army’s joint southwestern command.
He said scattered remnants of other rebels were found.
‘‘Also found there were chains where it appears they constantly kept kidnap victims that they must have certainly brought from Ecuador,’’ Barrera said.
The regional army commander, General Jorge Alberto Segura, said about 60 rebels were in the three camps, which were located with the help of local residents.