Philippines earthquake: 6.3-magnitude tremor strikes in Samar

Fresh earthquake comes a day after a 6.1-magnitude tremor in Luzon

Workers join rescue operations for people still trapped inside a collapsed building at Porac town, Pampanga province, northern Philippines Monday, April 22, 2019. A strong 6.1 magnitude earthquake in the north Philippines on Monday trapped some people in a collapsed building, damaged an airport terminal and knocked out power in at least one province, officials said. (AP Photo/Bullit Marquez)
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An earthquake of 6.3 magnitude struck the island of Samar in the central Philippines on Tuesday, the US Geological Survey said, a day after a deadly tremor rocked the north and Manila.

The USGS said the earthquake was centred about 13 kilometres east of Tutubigan on Samar. The earthquake was relatively deep at 70.2km.

Authorities warned residents that they should expect aftershocks.

There were no immediate reports of casualties or damage.

Tuesday's earthquake comes a day after a 6.1-magnitude tremor rocked the northern Philippines, killing at least 11 people.

Rescuers in Porac, Pampanga were scrambling to reach dozens of people feared buried under a collapsed market building.

The quake heavily damaging Clark International Airport and sent terrified office workers in the capital, Manila, fleeing swaying high-rises.

The toll could rise as crews fanned out across the mostly rural region to assess damage in isolated village that lost power and communications.

More than 400 aftershocks have been registered since the initial earthquake, Philippine seismologists said.

The Philippines is part of the Pacific Ring of Fire, an arc of intense seismic activity that stretches from Japan through South East Asia and across the Pacific basin to the United States, Mexico and South America.