ANOTHER magnitude 6.5 earthquake shook Cotabato on Thursday morning, the fourth strong quake in the area in two weeks, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

Phivolcs recorded the epicenter of the quake at 33 kilometers northeast of Tulunan, Cotabato at 9:11 a.m. It was tectonic in origin and had a shallow depth of 2 kilometers.