The epicenter of the quake which struck at 07.59 western Indonesian time was in the sea about 432 km southeast of the Maluku provincial capital Ambon at a depth of 161 km, the Meteorology, Climatology and Geophysics Agency (BMKG) said in its official website.
The quake was not strong enough to trigger a tsunami, it said. Indonesia sits on the Pacific "Ring of Fire" where the meeting of continental plates causes high volcanic and seismic activity.
Maluku province lies at the meeting point of the country`s two main chains of volcanoes.
(S012/B003)
Editor: Aditia Maruli Radja
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