In Philippines, a 6.6-magnitude quake struck the southern part of the country today, rattling buildings and sending terrified locals fleeing into the streets.<br />''<br />''The US Geological Survey said, the shallow tremor hit the island of Mindanao in the same region where a deadly quake struck earlier this month. However, there was no tsunami threat.<br />''<br />''Philippine authorities said there were no immediate reports of injuries.<br />''<br />''The Philippines is part of the Pacific "Ring of Fire", an arc of intense seismic activity that stretches from Japan through Southeast Asia and across the Pacific basin.<br />