6.7 Magnitude Earthquake Shakes Southern Philippines: US Geological Survey

"I think it was the strongest earthquake I've ever experienced," Keeshia Leyran, 27- Report

A strong magnitude 6.7 earthquake shook the southern Philippines on Friday, the US Geological Survey said, with local authorities warning of potential damage.

No tsunami threat was issued after the quake struck off Sarangani province on the main southern island of Mindanao at a depth of 78 kilometres (48 miles) at 0814 GMT, the USGS said in a statement.

There were no immediate reports of casualties but the quake was felt across a wide area of the mountainous island.