TAIPEI (Reuters) - Two earthquakes shook southern and eastern Taiwan but there were no immediate reports of damage or casualties, officials said on Thursday. A Central Weather Bureau statement said the first quake occurred late on Wednesday and measured 5.3 on Richter scale. Its epicentre was 45 km (28 miles) due north of Taiwan's southeastern offshore island of Lanyu and was centred 9.4 km (5.9 miles) beneath the earth's surface. The epicentre of the second quake, measuring 4.7 on the Richter scale, was 28.6 km (17.9 miles) northeast of Taiwan's eastern coastal city of Hualien and 53.4 km (33.4 miles) beneath the earth's surface. There were no immediate reports of damage or casualties from the tremors, an interior ministry spokesman said by telephone. Earthquakes are relatively common in Taiwan and rarely cause severe damage.