A minor earthquake jolted Bulacan province, sending tremors in Metro Manila on Wednesday morning.
The Philippine Institute on Volcanology and Seismology (Phivolcs) confirmed that a 3.8-magnitude quake originated from 31 kilometers northeast of Dona Remedios Trinidad in Bulacan.
In its bulletin, Philvolcs said the quake, which was of tectonic origin, sent tremors in various cities in National Capital Region at 10:07 a.m. on Oct 31.
Phivolcs recorded the quake, which had a shallow depth of 13 kilometers, was felt at weak intensity III in Makati, Pasig, and Quezon Cities.
Intensity III is felt by many people indoors like a vibration coming off from a passing of a light truck especially in upper floors of a building.
Phivolcs added some people may have also felt dizziness and nausea during such quakes.
Twelve people were killed in the Philippines on Saturday as troops clashed with a militant group blamed for the country's deadliest terror attacks, the military said.