A 6(point)8-magnitude earthquake struck off the Philippines today, damaging several buildings. Officials said, two people were injured as panicked residents fled the coast following a tsunami warning.<br/><br/>US authorities warned of potential hazardous waves in the southern region of Mindanao and Indonesia after the quake hit at 4:23 am, but the tsunami alert was lifted less than two hours later. Residents were jolted from their beds and ran onto the streets as the earthquake shook the area. <br/><br/>The earthquake left cracks in a hospital, two government buildings and a port. It also triggered the collapse of at least one house and caused a brief power outage. The US Geological Service said, the quake struck at a depth of 41 kilometres off Mindanao island. The Philippines lies on the so-called Ring of Fire, a vast Pacific Ocean region where many of Earth's quakes and volcanic eruptions occur.