The Philippines was struck by its strongest earthquake?in five decades on Monday, killing at least 15 people, displacing tens of thousands and damaging buildings on its southern island.

The USGS estimated the quake at 7.8? in magnitude, as did the Philippines. It was the most powerful quake to rock the Southeast Asian nation since 1976, and the strongest globally this year, based on USGS data. The tsunami threat has now largely passed.

At least 15 people have been reported dead, according to local disaster management councils. One person died of cardiac arrest, while another was hit by debris in South Cotabato province. Around 70,000 people were displaced, while over 100 were injured.