COLOMBIAN President Juan Manuel Santos says nine people, including civilians, military and a police officer, have died in an attack on a police station that's being blamed on rebels.

Santos says 23 civilians, 12 police and three troops were wounded in the attack in the community of Inza in Cauca department. He has offered a reward worth about $US26,000 ($A28,702) for information for leading to the capture of those responsible.

Lieutenant Colonel Mauricio Cardenas said Revolutionary Armed Forces of Colombia rebels threw artisanal mortars at the station from a truck on Saturday, destroying that and several other buildings. Five soldiers, three civilians and a police officer died.

Santos ratified the continuation of peace negotiations with the FARC but ruled out a ceasefire. The talks have been held in Cuba since late 2012.

Originally published as 9 killed in rebel attack