The earthquake was centered under the ocean at a depth of 10 kilometers ( 6.2 miles ) . It was determined that the earthquake was a result of movement on a strike-slip fault , and was similar to the 2012 Indian Ocean earthquakes . The epicenter of the earthquake was approximately 805 kilometers ( 500 miles ) southwest of Padang , the capital of the province of West Sumatra ; the closest inhabited land to the epicenter was the Mentawai Islands , also part of West Sumatra . Tremors from the quake were felt as far away as Singapore and Malaysia , though no injuries were reported outside of Indonesia
2012 Indian Ocean earthquakes
2012 Indian Ocean earthquakes
2016 Sumatra earthquake