Major earthquake hits off Indonesian island of Sumatra

A tsunami alert has been issued after an earthquake with a magnitude of 7.8 hit the Indonesian island of Sumatra.
The quake's epicentre was 204 km (127 miles) northwest of Sibolga on Sumatra's coast, at a depth of nearly 48km, the US Geological Survey said.
Three aftershocks were reported in the northern state of Aceh, but there were no immediate reports of casualties.
Indonesia sits on the Pacific Ring of Fire, one of the world's most active areas for earthquakes and volcanoes.
It has recently been struck by string of quakes; one off Sumatra in September killed more than 1,000 people.
The latest quake struck at 0515 on Wednesday morning (2215 GMT on Tuesday).


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