“Some of the buildings here show cracks,” police chief Major Nazareno Emia added. “Power was cut off and internet as well.”
Two construction workers in the nearby landlocked province of Benguet died in separate incidents, police said.
Another person was killed when boulders smashed into the building site where he was working in Kalinga province, police said. Six other workers were injured.
Police said an elderly woman in Suyo municipality in Ilocos Sur province suffered fatal injuries after she was buried by a landslide while out walking.
In Vigan City, a UNESCO World Heritage site in Ilocos Sur, centuries-old structures built during the Spanish colonial period were damaged, police said.
Ring of Fire
The Philippines is regularly rocked by quakes due to its location on the Pacific “Ring of Fire”, an arc of intense seismic activity that stretches from Japan through Southeast Asia and across the Pacific basin.
Wednesday’s quake was one of the strongest recorded in the Philippines in years and was felt across swathes of Luzon island, the most populous in the archipelago.
It was followed by nearly 300 aftershocks, the local seismological agency said. Several of the subsequent quakes measured from magnitude 4.7 to 5.2, according to USGS.