A 6.4 magnitude earthquake struck south-eastern Taiwan on Saturday, the US Geological Survey said. The quake hit just after 9.30pm (1330 GMT) about 50km (30 miles) north of the coastal city of Taitung at 10 kilometres (six miles) deep. Taiwan’s Central Weather Bureau put the magnitude slightly lower at 6.4 but said it was shallower at 7.3 kilometres (4.5 miles). Local media initially reported no injuries or damage from the quake, but Taiwan’s Central news agency said the metro system in Kaoshiung city in the south of the island was temporarily suspended. The quake was also felt in the capital, Taipei. The epicentre was in Taitungcounty, a rice-growing area of flat terrain with a population of about 8,500. Taiwan is regularly hit by earthquakes as the island lies near the junction of two tectonic plates. The island does not issue tsunami warnings unless a quake is more powerful than magnitude 7.0. Some earthquakes of 6.0 or more can prove deadly, although much depends on where the quake strikes and at what depth. The USGS estimated there was a low likelihood of casualties on Saturday, though said some damage was possible.