A powerful 7.8-magnitude earthquake has rocked the southern Philippines, killing at least 32 people. Most of the deaths occurred in Sarangani province due to a landslide. The quake struck Monday, causing buildings to collapse and triggering small tsunamis. Waves were detected as far away as Japan. Officials report more than 200 injuries and significant damage in General Santos city. Philippine President Ferdinand Marcos Jr. has ordered disaster-response efforts. The Pacific Tsunami Warning Center lifted its alert hours after the quake. The Philippines frequently experiences earthquakes due to its location on the Pacific "Ring of Fire."