A magnitude 6.7 earthquake shook the Philippine Institute of Volcanology and Seismology early this morning, south of the Philippine capital, Manila.
The earthquake was 116 km deep and lasted about a minute. According to the institute, the epicenter was near the city of Kalatagan in Batangas province, 93 km south of Manila.
Eight minutes after the first earthquake in the same area there was a second, magnitude 5.1. The institute warned that there could be more aftershocks.
The director of the institute, Renato Solidum, explained that when an earthquake occurs at great depth, there is usually no danger of significant damage or a tsunami, but there are aftershocks.
Solidum told radio stations in Manila that a magnitude 4 or 5 earthquake in the capital was strong but not devastating.