Strong quake off Indonesia's Java, no tsunami risk

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 340 km (210 miles) southwest of the city of Cilacap in the Indian Ocean and at a depth of 30 km, the official at the agency in Jakarta said.

Cilacap is the site of a major oil refinery.   

The quake struck at 5:23 am on Tuesday and there was an aftershock in the same area measuring 5.2 half an hour later, the agency said.   

The US Geological Survey put the initial quake at a shallower depth of 10 km on a bulletin on its Web site.   

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.  

The historic royal city and surrounding areas were devastated by a powerful earthquake just over a year ago, which killed more than 5,700 people.   

Indonesia suffers frequent earthquakes being in an active seismic zone where several of the earth's tectonic plates meet.