A magnitude 6 earthquake struck the southern Philippines on Wednesday near the municipality of Monkayo in Davao de Oro province. There were no immediate reports of significant damage, but police, firefighters and disaster officers are patrolling the area to evaluate the impact. Power was knocked out in Tagum City, 40 kilometers southwest of the epicenter. Aftershocks are typical after a major earthquake, but their frequency and intensity generally decrease over time. The Philippines is located on the Pacific "Ring of Fire," an area of high volcanic and seismic activity. The country regularly conducts earthquake drills.