A landslide in a remote and violence-torn area of Colombia killed six people and left four missing, authorities said Tuesday.

A wall of mud smashed into a small community in an isolated region of Narino department in southwestern Colombia Monday night, said Governor Camilo Romero.

"It covered two houses and left six people dead," he told AFP.

Rescue workers have not yet been able to access the area because of its difficult terrain, which serves as a hideout for drug traffickers and rebel groups including the Revolutionary Armed Forces of Colombia (FARC).

Four people are still missing, according to a source at the national disaster management agency.