At least five people were killed Friday when a gold mine collapsed in the south-western Colombian province of Narino, dpa quoted governor of the province as saying.Ten other people were injured, said Raul Delgado, governor of Narino. An unknown number of other people are missing, according to news reports.A news report earlier Friday said the number of dead was at least seven and the number of injured was 31, with 15 missing.Troops were deployed to protect the rescue team and to prevent attacks by guerrillas belonging to the Revolutionary Armed Forces of Colombia (FARC) are present in the region.The accident happened at a mine that the report said operated without the necessary permits just outside the town of Iscuande, which is about 500 kilometres south-west of Bogota. Such mines exist throughout the Andes.