Jakarta: An earthquake measuring 8.3 on the Richter scale jolted West Sumatra in Indonesia on Wednesday and a tsunami alert was issued, an official of the meteorology and geophysics agency said.
 
The quake struck at 7.49 p.m. local time with the epicentre 682 km southwest of Mentawai islands and at a depth of 10 km under the sea bed, the official told Xinhua.
 
The warning was issued for the West Sumatra province and neighbouring provinces of North Sumatra, Aceh, Bengkulu and Lampung, said the official.
 
 
Last year on 21st, Novermber 2015, earthquake measuring 6.0-magnitude  had jolted eastern Indonesia but no tsunami alert was issued, the Meteorology and Geophysics Agency said. 
 
The quake was centered 129 km northwest of Maluku Tenggara Barat in Maluku province with a depth of 78 km under sea level, an agency official told Xinhua news agency.
 
The US Geological Survey measured the tremor at 6.1-magnitude.