MANILA, Philippines — A magnitude 4.9 earthquake shook Sarangani, Davao Occidental on Sunday morning, said the Philippine Institute of Seismology and Volcanology (Phivolcs). Phivolcs in an advisory said this tremor was another aftershock from the magnitude 7.8 earthquake that struck the province on June 8. READ: Magnitude 5.3 quake strikes off Glan, Sarangani Recorded at