The Philippine Institute of Volcanology and Seismology (PHIVOLCS) recorded a magnitude 6 earthquake east of Hinatuan on Sunday evening, an aftershock of the magnitude 7.4 quake that struck Surigao del Sur on Saturday.
The magnitude 6 aftershock struck 98 kilometers northeast of Hinatuan, was tectonic in origin, and had a 10-kilometer depth of focus.
The aftershock was measured at an instrumental Intensity III in Surigao del Sur's Tandag City.
Damage was expected from the follow-on quake.
A magnitude 7.4 earthquake struck Hinatuan, Surigao del Sur at 10:37 p.m. on Saturday.
A pregnant woman died after a wall collapsed on her. She was rushed to a hospital but was declared dead on arrival.
State seismologists issued a tsunami warning, cautioning owners of boats in harbors and shallow coastal waters to secure their vessels and move away from the waterfront as a precaution.— DVM/RF, GMA Integrated News