The sources said that a strong 6.0-magnitude earthquake rattled the Molucca Sea off Indonesia’s eastern coast on Sunday. The eathquake, which was at a depth of 46 kilometres (28 miles), struck at 03:30 am (1830 GMT) about 195 kilometres south of Manado in northern Sulawesi island. There was no immediate tsunami warning from the Pacific Tsunami Warning Centre. Indonesia sits on the Pacific “Ring of Fire” where continental plates meet, causing frequent seismic & volcanic activity. The archipelagic nation was hardest hit by the earthquake-triggered Asian tsunami in December 2004 which killed an estimated 168,000 people in Aceh province.