Three bodies have been pulled out of a collapsed building in the town of Porac, while an old woman and her grandchild were crushed to death by another building in the town of Lubao, provincial governor Lilia Pineda told ABS-CBN television.
"It's hard because there is no power, so we're still trying to get hold of a generator to be able to rescue the people inside", the governor added. Media reported some structures had collapsed and the Clark International Airport, a former US military base, had suffered some damage and had closed.
A strong quake killed three people and trapped at several others Monday in a collapsed building that housed a supermarket in a northern Philippine province, where an worldwide airport terminal was closed due to damage, officials said.
Clark International Airport, located about an hour's drive north of the capital, suffered major damage, with at least seven people injured.
The four-story building crashed down when the 6.1 magnitude quake shook Pampanga as well as several other provinces and the capital, Manila, on the main northern island of Luzon.
The quake was centred on the town of Castillejos, about 100 kilometres (62 miles) northwest of Manila, local geologists said.
The St. Catherine church in Porac town was damaged in the quake.
"We urge them to refrain from spreading disinformation in social media that may cause undue alarm, panic and stress", said presidential spokesperson Salvador Panelo.
Manila also witnessed tremors and there were several Twitter users who posted pictures along with videos of swaying buildings in Makati City.
The magnitude 6.1 natural disaster hit at about 17:11 local time (09:11 GMT) on Monday, the Philippines Institute of Volcanology and Seismology reports.
The Philippines is part of the Pacific "Ring of Fire", an arc of intense seismic activity that stretches from quake-prone Japan through Southeast Asia and across the Pacific basin.
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