A strong 6.0-magnitude earthquake rattled the Molucca Sea off Indonesia's eastern coast on Sunday, seismologists said.
The quake, which was at a depth of 46 kilometres, struck at 03:30 am (00:00 IST Sunday) about 195 kilometres south of Manado in northern Sulawesi island, the US Geological Survey said.
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 and 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.