Three earthquakes shook Hualien in eastern Taiwan early Monday, with the strongest recorded at magnitude 5.1 on the Richter scale, but there were no reports of casualties or damage, according to the Central Weather Bureau (CWB). The magnitude 5.1 earthquake hit at 1:45 a.m., centered 7.5 kilometers southwest of the Hualien County Hall at a depth of 18.1 km, the CWB’s Seismology Center said. The quake caused strong tremors but they did not last long, the center said. The Hualien County Fire Department said it has not received any reports of damage. A second earthquake, magnitude 2.8, struck at 2:14 a.m., with the epicenter 9 km west of the county hall at a depth of 11.7 km, the Seismology Center said. It was followed by a magnitude 4.7 temblor at 3:43 a.m., centered 8.5 km southwest of the county hall at a depth of 16.1 km. Taiwan sits in an earthquake-prone area. More than 30 earthquakes rocked the island.