A magnitude 5.5 earthquake strikes off Davao Occidental on June 11, according to the Philippine Institute of Volcanology and Seismology (Phivolcs). Phivolcs identifies the quake as an aftershock of a larger magnitude 7.8 offshore Sarangani earthquake recorded on Monday, June 8, 2026. The aftershock occurs at about 9:56 a.m. and is located 67 kilometers southwest of Balut Island in Sarangani town, within Davao Occidental. The quake has a depth of focus of 10 kilometers and is described as tectonic in nature. The reports note that the earlier magnitude 7.8 event struck around 7:37 a.m. and was positioned 32 kilometers southwest of Maasim, Sarangani. Following that main quake, multiple aftershocks were recorded, including the June 11 M5.5 event. While the provided articles do not include specific casualty or damage figures for the aftershock itself, they consistently attribute the June 11 earthquake to the ongoing aftershock sequence of the June 8 Sarangani earthquake.