A strong magnitude-7.9 earthquake has struck off the west coast of the Indonesian island of Sumatra, with local authorities issuing a tsunami warning.
The US Geological Survey said the epicenter of Wednesday’s powerful quake was 808 km (502 miles) southwest of Padang, but it was shallow as it struck at a depth of 10 kilometers (six miles).
According to early reports, the quake has killed some people, but it was not yet clear how many, an official of the country's search and rescue agency told Reuters.
"There are some who have died," said Heronimus Guru, the agency's deputy head of operations, without giving details.
Indonesia’s National Meteorological Agency said the tsunami alert was issued for parts of Sumatra, including West Sumatra, North Sumatra and Aceh.
USGS originally put the magnitude at 8.2, and then 8.1, before lowering it to 7.9.
There were no immediate reports of damage or casualties but the shallower a quake the more likely it is to cause damage.
Indonesia is frequently hit by earthquakes as it straddles the so-called "Pacific Ring of Fire," a highly seismically active zone where different plates on the earth's crust meet and create a large number of earthquakes and volcanoes.
Indonesia, especially its Aceh region, was badly hit by the Indian Ocean tsunami in 2004.
A strong magnitude-7.9 earthquake has struck off the west coast of the Indonesian island of Sumatra, with local authorities issuing a tsunami warning.
The US Geological Survey said the epicenter of Wednesday’s powerful quake was 808 km (502 miles) southwest of Padang, but it was shallow as it struck at a depth of 10 kilometers (six miles).
According to early reports, the quake has killed some people, but it was not yet clear how many, an official of the country's search and rescue agency told Reuters.
"There are some who have died," said Heronimus Guru, the agency's deputy head of operations, without giving details.
Indonesia’s National Meteorological Agency said the tsunami alert was issued for parts of Sumatra, including West Sumatra, North Sumatra and Aceh.
USGS originally put the magnitude at 8.2, and then 8.1, before lowering it to 7.9.
There were no immediate reports of damage or casualties but the shallower a quake the more likely it is to cause damage.
Indonesia is frequently hit by earthquakes as it straddles the so-called "Pacific Ring of Fire," a highly seismically active zone where different plates on the earth's crust meet and create a large number of earthquakes and volcanoes.
Indonesia, especially its Aceh region, was badly hit by the Indian Ocean tsunami in 2004.
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