A magnitude-7.1 earthquake rocked the Philippines on Thursday morning, according to the national earthquake centre. The quake’s epicentre had a depth of 630 kilometres and occurred off the coast of Mindanao, the second largest island in the Philippines, the centre said. The United States Geological Survey (USGS) located the epicentre just under 106 kilometres off the coast of Mindanao. There were no immediate reports of damage or casualties from the tremor. The Philippines is located on the Pacific Ring of Fire, which is known for its high seismic activity.