The Barracuda-Ilaga Conflict had greatly depopulated the municipality as majority of the people relocated to other towns . Atty. Francisco D. Boter , the municipal registrar , in his article in Pagadian Times reported : '' " Like a volcano that had erupted , Tukuran became a ghost town with only a handful of people roaming the streets with the mournful howling of scraggy dogs now and then disturbing the cemetery-like silence and solitude that pervaded the ones buzzing and taming residents . " '' On the evening of August 17 , 1976 , tsunami ravaged Illana Bay or 1976 Moro Gulf earthquake . It was caused by a 6.7 magnitude undersea earthquake . People that night living in the coast heard the roaring sound of the sea , ran to save their lives going to Curvada at about 9:30 in the evening . In Bayao , houses were washed out into the mangroves and into the Bayao River delta . This time the residents were given assistance by the joint group of social action center ( SAC ) , Kapapagaria Foundation Inc. ( KFI ) in coordination with the Department of Social Welfare and Development ( DSWD ) . Despite the devastation , only one casualty was reported
1976 Moro Gulf earthquake
1976 Moro Gulf earthquake
Tukuran, Zamboanga del Sur