MANILA, Nov 18 (Reuters) - The death toll from a magnitude 6.7 earthquake in the southern Philippines has increased to six and authorities are searching for two missing people, local disaster officials said on Saturday. A man and his wife died when a concrete wall collapsed on them, while another woman was killed in a shopping mall, Dacera said. In Davao Occidental province, a 78-year-old man died after being crushed by a rock, Franz Irag, civil defense officer in the Davao region, told DWPM radio. Power supply has been restored and most roads are passable, disaster officials said, adding that reports were mostly of minor damage to homes and buildings. The Philippines lies within the Pacific "Ring of Fire," where volcanic activity and earthquakes are common.

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Persons: Agripino, General Santos, Dacera, Angel Dugaduga, Franz Irag, Neil Jerome Morales, Chris Reese, Rosalba O'Brien Organizations: German Research Center, Geosciences, General, General Santos City, Reuters, Thomson Locations: MANILA, Philippines, Mindanao, South Cotabato, Sarangani, Glan, Davao Occidental province, Davao