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JAKARTA - A 6.0-magnitude earthquake struck south of Indonesia's Java island on Wednesday, but there was no tsunami risk or reports of damage, an official at the country's meteorological agency said.
The epicentre of the quake was 340km southwest of the city of Cilacap in the Indian Ocean and at a depth of 30km, the official at the agency in Jakarta said by telephone.
Cilacap is the site of a major oil refinery.
The quake struck at 5.23am (10.23am NZT) and there was an aftershock in the same area measuring 5.2 half an hour later, the agency said.
Elshinta radio said the quake was felt in the city of Yogyakarta in central Java, but also said there had been no reports of damage or casualties.
Indonesia suffers frequent earthquakes being in an active seismic zone where several of the earth's tectonic plates meet.
- REUTERS