A major 7.7-magnitude earthquake struck off Sumatra on Monday night, seismologists said, but there were no reports of damage or casualties and an earlier tsunami warning was lifted.
The undersea quake hit Indonesia’s Kepulauan Mentawai region at 9:42pm at a shallow depth of 20.6 kilometres, the US Geological Survey said.
The area is 240 kilometres west of Bengkulu and 280 kilometres south of Padang, an area popular with tourists.
The Geophysics and Meteorology agency lifted an earlier tsunami warning.
The 7.7 earthquake was followed by powerful magnitude 6.1 and 6.2 aftershocks about five and eight hours later in the same area.
Residents reported shaking as far away as the West Sumatran provincial capital of Padang relating to the earlier quake, but fears of widespread damage eased a few hours later.