A strong quake with a magnitude of 6.7 hit off the Indonesian island of Maluku on Saturday, seismologists said, but there were no immediate reports of a tsunami or casualties.
The quake struck at 15:57 pm local time (0657 GMT) about 152 kilometres (94 miles) northwest of Tual, Maluku province, at a depth of 67 kilometres, the Indonesian Meteorology and Geophysics Agency said.
"The quake happened under the sea far enough from the nearest town of Tual. It's also deep, meaning that its effect will be insignificant," the agency's technical head Suharjono told AFP.
"There is no report of damages yet," he added.
A later US Geological Survey report registered the quake, in the Banda Sea, at a magnitude of 6.0.
Indonesia sits on the Pacific "Ring of Fire," where the meeting of continental plates causes high volcanic and seismic activity.