A shallow earthquake struck southern Taiwan early today. According to US Geological Survey, the epicentre of the moderate 5.6-magnitude quake was 19 kilometres from Tainan city where a 6.4-magnitude quake last February toppled an apartment complex, burying residents and killing 115.<br/><br/>No deaths were reported today in the earthquake, which left four people injured in Tainan and Kaohsiung. According to the national fire agency, earthquake caused a brief power outage in Tainan's eastern district. <br/><br/>Taiwan lies near the junction of two tectonic plates and is regularly hit by earthquakes. The island's worst tremor in recent decades was a 7.6-magnitude quake in September 1999 that killed around 2,400 people.