MANILA — A 5.1-magnitude undersea earthquake struck off Sarangani province on Friday night, according to Phivolcs.
The agency said the tectonic temblor occurred 49 km southwest of Kiamba town at a depth of 24 km.
Intensity 5 was recorded in Kiamba and Maitum, Sarangani while Intensity 3 was experienced in General Santos City; Zamboanga City; Cotabato City; Maasim, Sarangani; and Norala, Tupi and Lake Sebu in South Cotabato.
Instrumental Intensity 3 was also logged in Maasim and Zamboanga City.
Phivolcs said aftershocks are expected but damage to structures is unlikely.