KORONADAL CITY—A magnitude 6.4 earthquake shook parts of Mindanao on Wednesday noon, prompting the city government of General Santos and several towns in South Cotabato province to suspend classes. Its epicenter was traced 37 kilometers southwest off Balut Island in Sarangani, Davao Occidental. READ: WALANG PASOK: Class suspensions on August 5 due to southern Mindanao
