MANILA, Philippines: A 6.3-magnitude earthquake rocked Mati City in Davao Oriental shortly after 6am Saturday, according to USGS.
The Philippine Institute of Volcanology and Seismology (Phivolcs) gave a 6.5-magnitude rating to the quake.
About an hour later, it was followed by another quake, some 47km SE of Tamisan, Philippines, with a recorded intensity of 4.9.
Residents of Davao City, about 72 km from Mati City, also reported the earth shaking early on Saturday morning.
The temblor was also felt in General Santos City, Alabel, Glan & Malapatan, Sarangani, Polomolok, South Cotabato
Phivolcs said aftershocks are expected after the quake, which was tectonic in origin.
Phivolcs said no damage is expected after the earthquake.
The US Geological Survey placed the earthquake at a lower magnitude of 6.3 which it said centered around 100 kilometers southeast of Davao City, but the Pacific Tsunami Warning Center said there was no tsunami threat from the strong quake.
